# 2022 in arthropod paleontology

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2022 in arthropod paleontology is a list of new arthropod fossil taxa, including arachnids, crustaceans, insects, trilobites, and other arthropods that were announced or described, as well as other significant arthropod paleontological discoveries and events which occurred in 2022.

## Arachnids
### New taxa

| Name | Novelty | Status | Authors | Age | Type locality | Country | Notes |
| Acrometa gibbosa | Sp. nov | Valid | Wunderlich | Eocene | Baltic amber | Europe (Baltic Sea region) | A spider belonging to the family Synotaxidae. |
| Acrometa glomus | Sp. nov | Valid | Wunderlich | Eocene | Baltic amber | Europe (Baltic Sea region) | A spider belonging to the family Synotaxidae. |
| Acrometa longisetae | Sp. nov | Valid | Wunderlich | Eocene | Baltic amber | Europe (Baltic Sea region) | A spider belonging to the family Synotaxidae. |
| Annazomus | Gen. et sp. nov | Valid | De Francesco Magnussen & Müller in De Francesco Magnussen et al. | Cretaceous | Burmese amber | Myanmar | A member of Schizomida belonging to the family Hubbardiidae. The type species is A. parvulus De Francesco Magnussen. |
| Araneometa procera | Sp. nov | Valid | Wunderlich in Wunderlich & Müller | Miocene | Mexican amber | Mexico | A long-jawed orb weaver. |
| Archaeocroton kaufmani | Sp. nov | Valid | Chitimia-Dobler, Mans & Dunlop in Chitimia-Dobler et al. | Cretaceous | Burmese amber | Myanmar | A hard tick. Announced in 2022; the final article version was published in 2023. |
| Archaeofeaella | Gen. et sp. nov | | Kolesnikov et al. | Late Triassic | | Ukraine | A pseudoscorpion belonging to the family Feaellidae. Genus includes new species A. henderickxi. |
| Balticodromus | Gen. et sp. nov | Valid | Wunderlich | Eocene | Baltic amber | Europe (Baltic Sea region) | A spider belonging to the family Philodromidae. The type species is B. porrectus. |
| Balticosynotaxus | Gen. et sp. nov | Valid | Wunderlich | Eocene | Baltic amber | Europe (Baltic Sea region) | A spider belonging to the family Synotaxidae. The type species is B. angulatus. |
| Baltonychia | Gen. et sp. nov | Valid | Bartel, Derkarabetian & Dunlop | Eocene | Baltic amber | Europe (Baltic Sea region) | A member of Opiliones belonging to the superfamily Travunioidea. The type species is B. obscura. |
| Betaburmesebuthus spinipedis | Sp. nov | In press | Xuan, Cai & Huang | Cretaceous | Burmese amber | Myanmar | A scorpion belonging to the family Palaeoburmesebuthidae. |
| Bicornoculus aungi | Sp. nov | Valid | Jiang & Li in Xin et al. | Late Cretaceous | Burmese amber | Myanmar | A spider belonging to the family Tetrablemmidae. |
| Bicornoculus wunnai | Sp. nov | Valid | Jiang & Li in Xin et al. | Late Cretaceous | Burmese amber | Myanmar | A spider belonging to the family Tetrablemmidae. |
| Bicornoculus yarzari | Sp. nov | Valid | Jiang & Li in Xin et al. | Late Cretaceous | Burmese amber | Myanmar | A spider belonging to the family Tetrablemmidae. |
| Bothriocroton muelleri | Sp. nov | Valid | Chitimia-Dobler, Mans & Dunlop in Chitimia-Dobler et al. | Cretaceous | Burmese amber | Myanmar | A hard tick. Announced in 2022; the final article version was published in 2023. |
| Burmalomanius | Gen. et sp. nov | In press | Bartel et al. | Cretaceous (Albian–Cenomanian) | Burmese amber | Myanmar | A member of Opiliones belonging to the family Podoctidae. Genus includes new species B. circularis. |
| Burmatheridion cetani | Sp. nov | Valid | Jiang & Li in Xin et al. | Late Cretaceous | Burmese amber | Myanmar | A spider belonging to the family Theridiidae. |
| Burmeochthonius | Gen. et 2 sp. nov | | Johnson et al. | Late Cretaceous (Cenomanian) | Burmese amber | Myanmar | A pseudoscorpion belonging to the family Chthoniidae, subfamily Chthoniinae and the tribe Tyrannochthoniini. Genus includes new species B. kachinae and B. muelleri. |
| Caeculus fedrae | Sp. nov | Valid | Porta, Michalik & Ramírez | Eocene | Baltic amber | Russia ( Kaliningrad Oblast) | A mite belonging to the family Caeculidae. |
| Chaerilobuthus brandti | Sp. nov | Valid | Lourenço in Lourenço & Velten | Cretaceous | Burmese amber | Myanmar | A scorpion belonging to family Chaerilobuthidae. |
| Chrosiothes chiapas | Sp. nov | Valid | Wunderlich in Wunderlich & Müller | Miocene | Mexican amber | Mexico | A species of Chrosiothes. |
| Claspingblemma | Gen. et sp. nov | Valid | Wunderlich in Wunderlich & Müller | Cretaceous | Burmese amber | Myanmar | A spider belonging to the family Tetrablemmidae. The type species is C. duospinae. |
| Cretaceousbuthus | Gen. et sp. nov | Valid | Lourenço in Lourenço & Velten | Cretaceous | Burmese amber | Myanmar | A scorpion belonging to family Buthidae. The type species is C. fraaijeorum. |
| Cretaceoushormiops staxi | Sp. nov | Valid | Lourenço in Lourenço & Velten | Cretaceous | Burmese amber | Myanmar | A scorpion belonging to family Protoischnuridae. |
| Cretaceozomus | Gen. et 2 sp. nov | Valid | De Francesco Magnussen & Müller in De Francesco Magnussen et al. | Cretaceous | Burmese amber | Myanmar | A member of Schizomida. The type species is C. robustus De Francesco Magnussen; genus also includes C. angustocaudatus De Francesco Magnussen. |
| Cretotheridion champoi | Sp. nov | Valid | Jiang & Li in Xin et al. | Late Cretaceous | Burmese amber | Myanmar | A spider belonging to the family Theridiidae. |
| Cymbioblemma ohnmari | Sp. nov | Valid | Jiang & Li in Xin et al. | Late Cretaceous | Burmese amber | Myanmar | A spider belonging to the family Tetrablemmidae. |
| Deinocroton copia | Sp. nov | Valid | Chitimia-Dobler, Mans & Dunlop in Chitimia-Dobler et al. | Cretaceous | Burmese amber | Myanmar | A tick. |
| Doubravatarbus | Gen. et sp. nov | Valid | Hradská et al. | Carboniferous (Moscovian) | Kladno Formation | Czech Republic | A member of Trigonotarbida belonging to the family Aphantomartidae. The type species is D. krafti. |
| Electroblemma acuminataformis | Sp. nov | Valid | Wunderlich in Wunderlich & Müller | Cretaceous | Burmese amber | Myanmar | A spider belonging to the family Tetrablemmidae. |
| Eocryphoeca duplex | Sp. nov | Valid | Wunderlich | Eocene | Baltic amber | Europe (Baltic Sea region) | A spider related to Cryphoecina. |
| Eocryphoecara longtegap | Sp. nov | Valid | Wunderlich | Eocene | Baltic amber | Europe (Baltic Sea region) | A spider related to Cryphoecina. |
| Eogamasomorpha magnaseta | Sp. nov | Valid | Wunderlich in Wunderlich & Müller | Cretaceous | Burmese amber | Myanmar | A spider belonging to the family Tetrablemmidae. |
| Eotrechalea darrellubick | Sp. nov | Valid | Wunderlich | Eocene | Baltic amber | Europe (Baltic Sea region) | A spider, possibly a member or a relative of the family Zoropsidae. |
| Furcembolus inzaliae | Sp. nov | Valid | Jiang & Li in Xin et al. | Late Cretaceous | Burmese amber | Myanmar | A spider belonging to the family Pacullidae. |
| Groehnizomus | Gen. et 2 sp. nov | Valid | De Francesco Magnussen & Müller in De Francesco Magnussen et al. | Cretaceous | Burmese amber | Myanmar | A member of Schizomida. The type species is G. oculiferans De Francesco Magnussen & Müller; genus also includes G. rodrigoi Müller. |
| Hirsutisoma grimaldii | Sp. nov | Valid | Botero-Trujillo et al. | Cretaceous | Burmese amber | Myanmar | A member of Ricinulei belonging to the family Hirsutisomidae. |
| Ixodes antiquorum | Sp. nov | Valid | Chitimia-Dobler, Mans & Dunlop in Chitimia-Dobler et al. | Cretaceous | Burmese amber | Myanmar | A tick, a species of Ixodes. |
| Kachintelema | Gen. et sp. nov | Valid | Wunderlich in Wunderlich & Müller | Cretaceous | Burmese amber | Myanmar | A spider belonging to the family Telemidae. The type species is K. calcarfemur. |
| Khimaira | Gen. et sp. nov | Valid | Chitimia-Dobler, Mans & Dunlop in Chitimia-Dobler et al. | Cretaceous | Burmese amber | Myanmar | A tick combining a body resembling that of a soft tick with a basis capitulum more like that of a hard tick, assigned to a new family Khimairidae as a possible transitional form between soft and hard ticks. Genus includes new species K. fossus. |
| Laccolithus petrunkevitchi | Sp. nov | Valid | Wunderlich | Eocene | Baltic amber | Europe (Baltic Sea region) | A spider belonging to the family Phrurolithidae. |
| Longissipalpus aliter | Nom. nov | Valid | Wunderlich in Wunderlich & Müller | Cretaceous | Burmese amber | Myanmar | A spider belonging to the group Araneomorphae and the family Pholcochyroceridae; a replacement name for Longissipalpus cochlea Wunderlich (2021). |
| Mesodibunus | Gen. et sp. nov | In press | Bartel et al. | Cretaceous (Albian–Cenomanian) | Burmese amber | Myanmar | A member of Opiliones belonging to the family Epedanidae. Genus includes new species M. tourinhoae. |
| Microuloborus ater | Sp. nov | Valid | Wunderlich in Wunderlich & Müller | Cretaceous | Burmese amber | Myanmar | A spider belonging to the family Uloboridae. |
| Muellerizomus | Gen. et 2 sp. nov | Valid | De Francesco Magnussen & Müller in De Francesco Magnussen et al. | Cretaceous | Burmese amber | Myanmar | A member of Schizomida. The type species is M. palicaudatus De Francesco Magnussen; genus also includes M. amandae De Francesco Magnussen & Müller. |
| Palaeoburmesebuthus andrewrossi | Sp. nov | Valid | Santiago-Blay et al. | Cretaceous | Burmese amber | Myanmar | A scorpion belonging to the family Palaeoburmesebuthidae. |
| Palaeoburmesebuthus smithi | Sp. nov | Valid | Santiago-Blay, Soleglad, Craig & Fet in Santiago-Blay et al. | Cretaceous | Burmese amber | Myanmar | A scorpion belonging to the family Palaeoburmesebuthidae. |
| Palaeoleptoneta acus | Sp. nov | Valid | Wunderlich in Wunderlich & Müller | Cretaceous | Burmese amber | Myanmar | A spider belonging to the family Leptonetidae. |
| Palaeoleptoneta baculum | Sp. nov | Valid | Wunderlich in Wunderlich & Müller | Cretaceous | Burmese amber | Myanmar | A spider belonging to the family Leptonetidae. |
| Palaeoleptoneta laticymbium | Sp. nov | Valid | Wunderlich in Wunderlich & Müller | Cretaceous | Burmese amber | Myanmar | A spider belonging to the family Leptonetidae. |
| Palpalpaculla phyui | Sp. nov | Valid | Jiang & Li in Xin et al. | Late Cretaceous | Burmese amber | Myanmar | A spider belonging to the family Tetrablemmidae. |
| Palptibiaap | Gen. et sp. nov | Valid | Wunderlich in Wunderlich & Müller | Cretaceous | Burmese amber | Myanmar | A spider belonging to the group Araneoidea and the family Zarqaraneidae. The type species is P. cochlear. |
| Parachimerarachne | Gen. et sp. nov | Valid | Wunderlich in Wunderlich & Müller | Cretaceous | Burmese amber | Myanmar | An arachnid related to Chimerarachne. The type species is P. longiflagellum. Later study synonymized this genus to Chimerarachne. |
| Petroburma | Gen. et sp. nov | In press | Bartel et al. | Cretaceous (Albian–Cenomanian) | Burmese amber | Myanmar | A member of Opiliones belonging to the family Petrobunidae. Genus includes new species P. tarsomeria. |
| Phycosoma icti | Sp. nov | Valid | García-Villafuerte et al. | Miocene | Mexican amber | Mexico | A species of Phycosoma. |
| Praeteraraneoides multidentatum | Sp. nov | Valid | Wunderlich in Wunderlich & Müller | Cretaceous | Burmese amber | Myanmar | A spider belonging to the group Leptonetoidea and the family Protoaraneoididae. |
| Praetervetiator parvicirculus | Sp. nov | Valid | Wunderlich in Wunderlich & Müller | Cretaceous | Burmese amber | Myanmar | A spider belonging to the group Araneomorphae and the family Vetiatoridae. |
| Priscaleclercera chimei | Sp. nov | Valid | Jiang & Li in Xin et al. | Late Cretaceous | Burmese amber | Myanmar | A spider belonging to the family Psilodercidae, a species of Priscaleclercera. |
| Priscaleclercera foshou | Sp. nov | Valid | Jiang & Li in Xin et al. | Late Cretaceous | Burmese amber | Myanmar | A spider belonging to the family Psilodercidae, a species of Priscaleclercera. |
| Priscaleclercera hlaingi | Sp. nov | Valid | Jiang & Li in Xin et al. | Late Cretaceous | Burmese amber | Myanmar | A spider belonging to the family Psilodercidae, a species of Priscaleclercera. |
| Priscaleclercera kani | Sp. nov | Valid | Jiang & Li in Xin et al. | Late Cretaceous | Burmese amber | Myanmar | A spider belonging to the family Psilodercidae, a species of Priscaleclercera. |
| Priscaleclercera kyawae | Sp. nov | Valid | Jiang & Li in Xin et al. | Late Cretaceous | Burmese amber | Myanmar | A spider belonging to the family Psilodercidae, a species of Priscaleclercera. |
| Priscaleclercera thanae | Sp. nov | Valid | Jiang & Li in Xin et al. | Late Cretaceous | Burmese amber | Myanmar | A spider belonging to the family Psilodercidae, a species of Priscaleclercera. |
| Priscaleclercera thaungi | Sp. nov | Valid | Jiang & Li in Xin et al. | Late Cretaceous | Burmese amber | Myanmar | A spider belonging to the family Psilodercidae, a species of Priscaleclercera. |
| Procerclypeus corniculatus | Sp. nov | Valid | Wunderlich in Wunderlich & Müller | Cretaceous | Burmese amber | Myanmar | A spider belonging to the family Tetrablemmidae. |
| Propterkachin pygmaeus | Sp. nov | Valid | Wunderlich in Wunderlich & Müller | Cretaceous | Burmese amber | Myanmar | A spider belonging to the family Uloboridae. |
| Propterkachin unispinatus | Sp. nov | Valid | Wunderlich in Wunderlich & Müller | Cretaceous | Burmese amber | Myanmar | A spider belonging to the family Uloboridae. |
| Protochactas | Gen. et sp. nov | Valid | Fabio Magnani | Middle Triassic | Meride limestone | Switzerland | A basal scorpion. |
| Retrooecobius lwini | Sp. nov | Valid | Jiang & Li in Xin et al. | Late Cretaceous | Burmese amber | Myanmar | A spider belonging to the family Oecobiidae. |
| Sigillaricinuleus | Gen. et sp. nov | Valid | Wunderlich | Cretaceous | Burmese amber | Myanmar | A member of Ricinulei. The type species is S. tripares. |
| Spinicymbium curviparacymbium | Sp. nov | Valid | Wunderlich in Wunderlich & Müller | Cretaceous | Burmese amber | Myanmar | A spider belonging to the group Araneoidea and the family Zarqaraneidae. |
| ?Sulcosynotaxus matrimonium | Sp. nov | Valid | Wunderlich | Eocene | Baltic amber | Europe (Baltic Sea region) | A spider belonging to the family Synotaxidae. |
| Taubaracna | Gen. et sp. nov | | Martine et al. | Oligocene | Tremembé Formation | Brazil | A spider belonging to the group Araneomorphae. The type species is T. maculosa. |
| Thymoites carboti | Sp. nov | | García-Villafuerte | Miocene | Mexican amber | Mexico | A species of Thymoites. |
| Triangulum | Gen. et sp. nov | Valid | Jiang & Li in Xin et al. | Late Cretaceous | Burmese amber | Myanmar | A spider belonging to the family Theridiidae. The type species is T. thutai. |
| Trichoribates roynortoni | Sp. nov | | Ojeda & Rivas in Ojeda, Vega & Rivas | Miocene | La Quinta Formation (Mexican amber) | Mexico | A mite belonging to the family Ceratozetidae. |
| Zamilia arkari | Sp. nov | Valid | Jiang & Li in Xin et al. | Late Cretaceous | Burmese amber | Myanmar | A spider belonging to the family Oecobiidae. |
| Zamilia sheini | Sp. nov | Valid | Jiang & Li in Xin et al. | Late Cretaceous | Burmese amber | Myanmar | A spider belonging to the family Oecobiidae. |
| Zamilia shwayi | Sp. nov | Valid | Jiang & Li in Xin et al. | Late Cretaceous | Burmese amber | Myanmar | A spider belonging to the family Oecobiidae. |

### Arachnid research

* Shanks & Selden (2022) describe the first trigonotarbid specimens from the Carboniferous Shelburn Formation of Indiana and Senora Formation of Oklahoma.
* A study on the anatomy of Protoischnurus axelrodorum is published by Carvalho et al. (2022), who interpret this scorpion as a probable early member of the crown group of Iurida, possibly a stem hormurid.
* Xuan, Cai & Huang (2022) describe two immature scorpions from the Cretaceous amber from Myanmar, assigned to the genus Chaerilus.
* Revision of recluse spiders from the Dominican amber is published by Magalhaes et al. (2022), who transfer the species "Loxosceles" aculicaput to the family Drymusidae and to the genus Drymusa.

## Crustaceans
### Malacostracans

| Name | Novelty | Status | Authors | Age | Type locality | Country | Notes |
| Afroapseudes | Gen. et sp. nov | | Pasini, Vega & Garassino | Late Cretaceous (Cenomanian-Turonian) | | Morocco | A member of Tanaidacea belonging to the group Apseudomorpha. The type species is A. cretacicus. |
| Agnocarina | Gen. et sp. nov | Valid | Beschin, Busulini & Tessier | Eocene | | Italy | A crab belonging to the family Litocheiridae. The type species is A. quadriangula. |
| Agnonectes | Gen. et sp. nov | Valid | Beschin, Busulini & Tessier | Eocene | | Italy | A crab belonging to the family Portunidae. The type species is A. curvus. |
| Anisaeger longirostrus | Sp. nov | Valid | Smith et al. | Early Triassic | | United States | A member of the family Aegeridae. |
| Anisopagurus primigenius | Sp. nov | Valid | Ferratges et al. | Early Eocene | Serraduy Formation | Spain | A hermit crab. |
| Aquitainotlos | Gen. et sp. nov | Valid | Ossó & Cluzaud in Cluzaud & Ossó, 2022 | Oligocene (Rupelian) | | France | A crab belonging to the family Leucosiidae. The type species is A. gaasensis. |
| Archaeotetra angulosa | Sp. nov | Valid | Beschin, Busulini & Tessier | Eocene | | Italy | A crab belonging to the family Trapeziidae. |
| Asthenognathus fernandezi | Sp. nov | | Ferratges, Zamora & Aurell | Eocene (Ypresian) | Roda Formation | Spain | A crab belonging to the family Varunidae. |
| Basidromilites | Gen. et sp. nov | Valid | Artal et al. | Early Eocene | Serraduy Formation | Spain | A dromioid crab. Genus includes new species B. glaessneri. |
| Bechleja brevirostris | Sp. nov | Valid | De Mazancourt, Wappler & Wedmann | Eocene | Messel pit | Germany | Possibly a member of the family Palaemonidae. Announced in 2022; the correction including evidence of registration in ZooBank was published in 2023. |
| Brunnaega labuttensis | Sp. nov | Valid | Wilson & Morel | Late Cretaceous (Cenomanian) | | France | An isopod belonging to the family Cirolanidae. |
| Chiapasphaera | Gen. et sp. nov | In press | Vega & Bruce in Vega et al. | Early Cretaceous (Aptian) | Sierra Madre Formation | Mexico | An isopod belonging to the family Sphaeromatidae. The type species is C. cretacea. |
| Chronocancer | Gen. et sp. nov | Valid | Santana et al. | Early Cretaceous (Aptian-Albian) | Romualdo Formation | Brazil | A crab, probably a member of the family Orithopsidae. The type species is C. camilosantanai. Announced in 2022 in an online-only journal, and the publication did not include a ZooBank registration number; validated in 2023. |
| Clibanarius isabenaensis | Sp. nov | Valid | Ferratges et al. | Early Eocene | Serraduy Formation | Spain | A species of Clibanarius. |
| Cornedozius | Gen. et sp. nov | Valid | Beschin, Busulini & Tessier | Eocene | | Italy | A crab belonging to the family Menippidae. The type species is C. laevis. |
| Daciapagurus szklarkaensis | Sp. nov | Valid | Fraaije et al. | Late Jurassic (Oxfordian) | | Poland | A hermit crab. |
| Dardanus agnoensis | Sp. nov | Valid | Beschin, Busulini & Tessier | Eocene | | Italy | A species of Dardanus. |
| Dardanus balaitus | Sp. nov | Valid | Ferratges et al. | Early Eocene | Serraduy Formation | Spain | A species of Dardanus. |
| Ebalia baldanzae | Sp. nov | Valid | Garassino, Pasini & Pizzolato | Early Pleistocene | | Italy | A species of Ebalia. |
| Ebalia parva | Sp. nov | Valid | Garassino, Pasini & Pizzolato | Early Pleistocene | | Italy | A species of Ebalia. |
| Eoacmaeopleura | Gen. et sp. nov | Valid | De Angeli & Bellin | Eocene | | Italy | A crab belonging to the family Varunidae. Genus includes new species E. arzignanensis. |
| Eocalcinus veteris | Sp. nov | Valid | Ferratges et al. | Early Eocene | Serraduy Formation | Spain | A hermit crab. |
| Eolinurus | Gen. et comb. nov | Valid | Pasini et al. | Eocene (Ypresian) | Monte Bolca | Italy | A spiny lobster. The type species is "Palinurus" desmaresti Secrétan (1975). |
| Eomunidopsis texcalaensis | Sp. nov | Valid | Klompmaker et al. | Early Cretaceous (Barremian) | Zapotitlán Formation | Mexico | A member of the family Galatheidae. |
| Eostenetrium | Gen. et sp. nov | Valid | Wilson & Morel | Late Cretaceous (Cenomanian) | | France | An isopod belonging to the family Stenetriidae. Genus includes new species E. guerangeri. |
| Eureotropis | Gen. et sp. nov | In press | Mendes, Santana & Carvalho | Early Cretaceous (Barremian) | Sergipe-Alagoas Basin | Brazil | A crab belonging to the family Hymenosomatidae. The type species is E. elongata. |
| Galatheites sforum | Sp. nov | Valid | Klompmaker et al. | Late Jurassic (Kimmeridgian) | Massenkalk Formation | Germany | A member of Galatheoidea belonging to the family Catillogalatheidae. |
| Galene dashtbani | Sp. nov | Valid | Khosravi et al. | Miocene (Langhian) | Mishan Formation | Iran | A species of Galene. |
| Goniocypoda manuelae | Sp. nov | Valid | De Angeli & Caporiondo | Eocene | | Italy | A crab belonging to the family Hexapodidae. |
| Huhatanka australis | Sp. nov | Valid | Schweitzer, Feldmann & Casadío | Early Cretaceous | | Argentina | A member of Glypheoidea belonging to the family Mecochiridae. |
| Justitia confusa | Sp. nov | Valid | Pasini et al. | Eocene (Ypresian) | Monte Bolca | Italy | A spiny lobster, a species of Justitia. |
| Kromtitis isabenensis | Sp. nov | Valid | Artal et al. | Early Eocene | Serraduy Formation | Spain | A dromioid crab. |
| Ladinicaris | Gen. et sp. nov | Valid | Pasini et al. | Middle Triassic | Upper Meride Limestone | Switzerland | A member of the family Penaeidae. The type species is L. sceltrichensis. |
| Laevicarcinus grolensis | Sp. nov | Valid | Beschin, Busulini & Tessier | Eocene | | Italy | A crab. |
| Lantoceramia | Gen. et sp. nov | Valid | Wilson & Morel | Late Cretaceous (Cenomanian) | | France | An isopod belonging to the group Cymothooidea and the new family Lantoceramiidae. Genus includes new species L. ooeida. |
| Lathahypossia multispinosa | Sp. nov | Valid | Beschin, Busulini & Tessier | Eocene | | Italy | A crab. |
| Lessinoachela | Gen. et sp. nov | Valid | Pasini et al. | Eocene (Ypresian) | Monte Bolca | Italy | A member of Achelata of uncertain affinities. The type species is L. scaligera. |
| Lucahexapus | Gen. et sp. nov | Valid | De Angeli & Caporiondo | Eocene | | Italy | A crab belonging to the family Hexapodidae. The type species is L. mainensis. |
| Mainyozius | Gen. et sp. nov | Valid | De Angeli & Bellin | Eocene | | Italy | A crab belonging to the family Pseudoziidae. Genus includes new species M. bituberculatus. |
| Mclaynotopus | Gen. et sp. nov | Valid | Artal et al. | Early Eocene | Serraduy Formation | Spain | A dromioid crab. Genus includes new species M. longispinosus. |
| Mesozoidotea | Gen. et sp. nov | Valid | Wilson & Morel | Late Cretaceous (Cenomanian) | | France | An isopod belonging to the family Idoteidae. Genus includes new species M. gazonfierensis. |
| Montemagralia acuta | Sp. nov | Valid | Beschin, Busulini & Tessier | Eocene | | Italy | A crab. |
| Necrocarcinus christinae | Sp. nov | In press | Van Bakel, Ossó & Jackson | Late Cretaceous (Cenomanian) | Woodbine Formation | United States ( Texas) | A crab belonging to the family Necrocarcinidae. |
| Paguristes perlatus | Sp. nov | Valid | Ferratges et al. | Early Eocene | Serraduy Formation | Spain | A species of Paguristes. |
| Paguristes priarensis | Sp. nov | Valid | Beschin, Busulini & Tessier | Eocene | | Italy | A species of Paguristes. |
| Palaeoplanes | Gen. et sp. nov | Valid | Beschin, Busulini & Tessier | Eocene | | Italy | A crab of uncertain affinities. Genus includes new species P. veneticus. |
| Palicus priscus | Sp. nov | Valid | Beschin, Busulini & Tessier | Eocene | | Italy | A species of Palicus. |
| Palicus saenaensis | Sp. nov | Valid | Pasini, Garassino & Pizzolato | Early Pleistocene | | Italy | A species of Palicus. |
| Paracorallicarcinus cornedensis | Sp. nov | Valid | Beschin, Busulini & Tessier | Eocene | | Italy | A crab belonging to the family Litocheiridae. |
| Paradistefania subdivisa | Sp. nov | Valid | Beschin, Busulini & Tessier | Eocene | | Italy | A crab belonging to the superfamily Homolodromioidea and the family Goniodromitidae. |
| Paraglyphea simpsoni | Sp. nov | Valid | Charbonnier & Garassino | Middle Jurassic (Callovian) | | United Kingdom | A member of Glypheidea |
| Parapetrochirus serratus | Sp. nov | Valid | Ferratges et al. | Early Eocene | Serraduy Formation | Spain | A hermit crab. |
| Paredonius | Gen. et comb. nov | Valid | Vega & Garassino | Late Cretaceous (Maastrichtian) | Potrerillos Formation | Mexico | A crab of uncertain affinities. Genus includes "Sodakus" mexicanus Vega, Feldmann & Villobos-Hiriart (1995). |
| Pemphix krumenackeri | Sp. nov | Valid | Smith et al. | Early Triassic | | United States | A member of Glypheidea. |
| Protochaetilia | Gen. et sp. nov | Valid | Wilson & Morel | Late Cretaceous (Cenomanian) | | France | An isopod belonging to the family Chaetiliidae. Genus includes new species P. delaunayi. |
| Protohymenosoma | Gen. et 2 sp. nov | In press | Mendes, Santana & Carvalho | Early Cretaceous (Barremian) | Sergipe-Alagoas Basin | Brazil | A crab belonging to the family Hymenosomatidae. Genus includes new species P. gondwanicum and P. hexagonale. |
| Protomunida bennickei | Sp. nov | Valid | Klompmaker et al. | Paleocene (Danian) | | Denmark | A member of the family Munididae. |
| Protomunida eurekantha | Sp. nov | Valid | Klompmaker et al. | Paleocene (Danian) | Faxe Formation | Denmark | A member of the family Munididae. |
| Pylochelitergites cicatrix | Sp. nov | Valid | Fraaije et al. | Late Jurassic (Oxfordian) | | Poland | A hermit crab. |
| Santeella blowi | Sp. nov | Valid | Beschin, Busulini & Tessier | Eocene | | Italy | A crab. |
| Sienalia | Gen. et 2 sp. nov | Valid | Garassino, Pasini & Pizzolato | Early Pleistocene | | Italy | A crab belonging to the family Leucosiidae. The type species is S. fredianii; genus also includes S. ristorii. |
| Sierradromia | Gen. et sp. nov | Valid | Artal et al. | Early Eocene | Serraduy Formation | Spain | A dromioid crab. Genus includes new species S. gladiator. |
| Stimdromia conternoi | Sp. nov | Valid | Beschin & De Angeli | Eocene (Bartonian) | | Italy | A crab belonging to the family Dromiidae. |
| Teruzzicheles | Gen. et comb. nov | Valid | Audo & Charbonnier | Early Jurassic (Sinemurian) | | Italy | A member of the family Polychelidae; a new genus for "Coleia" popeyei Teruzzi (1990). |
| Tethysgalathea | Gen. et comb. nov | Valid | Klompmaker et al. | Eocene (Ypresian) | | Italy | A member of the family Galatheidae. The type species is "Eomunidopsis" prealpina Beschin et al. (2016). |
| Tomaricaris | Gen. et sp. nov | Valid | Garassino, Pasini & Nazarkin | Miocene (Serravallian-Tortonian) | Kurasi Formation | Russia ( Sakhalin Oblast) | A caridean shrimp belonging to the family Barbouriidae. The type species is T. ainuensis. |
| Torodromia | Gen. et sp. nov | Valid | Artal et al. | Early Eocene | Serraduy Formation | Spain | A dromioid crab. Genus includes new species T. elongata. |
| Vasconilia zapotitlanensis | Sp. nov | Valid | Klompmaker et al. | Early Cretaceous (Barremian) | Zapotitlán Formation | Mexico | A member of Galatheoidea belonging to the family Catillogalatheidae. |
| Viaia brinae | Sp. nov | In press | Gašparič et al. | Early Cretaceous (Aptian to Albian) | | Slovenia | A crab belonging to the family Viaiidae. |
| Viaia tisae | Sp. nov | In press | Gašparič et al. | Early Cretaceous (Aptian to Albian) | | Slovenia | A crab belonging to the family Viaiidae. |
| Zapalianassa | Gen. et comb. nov | Valid | Schweitzer, Feldmann & Casadío | | | Argentina | A new genus for "Pehuenchia" magna Rusconi (1948). |

#### Malacostracan research

* Description of the fossil material of members of Pygocephalomorpha from the Carboniferous Piesberg quarry (Lower Saxony, Germany), including a record of Anthracaris gracilis which was previously reported from the Mazon Creek fossil beds (Illinois, United States) and from Bickershaw (Lancashire, United Kingdom), and a study on the distribution of eumalacostracan crustaceans from Carboniferous deposits of North America and Europe is published by Pazinato et al. (2022).
* Redescription of Oncopareia bredai and a revision of other species previously referred to the genus Oncopareia is published by Tshudy et al. (2022).
* A study on the evolution of carapace morphology of hermit crabs and changes of composition of their assemblages through time is published by Fraaije et al. (2022), who reinstate Probeebeidae as a distinct family, and name a new family Paguropsidae.
* A study on sexual dimorphism and intersex specimens in the population of hundreds of specimens of the Cretaceous crab Dakoticancer overanus Jones, Schweitzer & Feldmann (2022).
* Ossó et al. (2022) report the first known fossil material of Pleolobites from the Paleocene (Thanetian) of Togo, and reevaluate the phylogenetic affinities of this and other fossil portunoid crabs.
* A concretion containing an adult and a juvenile individual of Trichopeltarion greggi, representing the first association of an adult female and a juvenile crab of the same species in the fossil record reported to date, is described from the Miocene Greta Siltstone (New Zealand) by Feldmann & Schweitzer (2022), who interpret this finding as possible evidence of maternal care of juveniles.

### Ostracods

| Name | Novelty | Status | Authors | Age | Type locality | Country | Notes |
| Aaleniella franzi | Sp. nov | Valid | Tesakova | Middle Jurassic | | Russia | |
| Aaleniella? ovoidea | Sp. nov | Valid | Tesakova | Middle Jurassic | | Russia | |
| Aaleniella volganica | Sp. nov | Valid | Tesakova | Middle Jurassic | | Russia | |
| Acrocythere sokurensis | Sp. nov | Valid | Tesakova | Middle Jurassic | | Russia | |
| Alatobairdia? sohni | Sp. nov | Valid | Forel in Forel et al. | Late Triassic (Norian) | Aksala Formation | Canada ( Yukon) | A member of the family Bairdiidae. |
| Anticythereis dorsennus | Sp. nov | Valid | Puckett & Hunt | Late Cretaceous | | United States | |
| Anticythereis slipperi | Sp. nov | Valid | Puckett & Hunt | Late Cretaceous | | United States | |
| Asculdoracythereis | Gen. et 3 sp. nov | Valid | Puckett & Hunt | Late Cretaceous | | United States | Genus includes new species A. asculdora, A. invicta and A. pseudoalabamensis. |
| Aurila diodoroi | Sp. nov | | Sciuto, Baldanza & Reitano | Early Pleistocene | | Italy | |
| Aurila seguenzai | Sp. nov | | Sciuto, Baldanza & Reitano | Early Pleistocene | | Italy | |
| Bairdia aksala | Sp. nov | Valid | Forel in Forel et al. | Late Triassic (Norian) | Aksala Formation | Canada ( Yukon) | A member of the family Bairdiidae. |
| Bairdia taan | Sp. nov | Valid | Forel in Forel et al. | Late Triassic (Carnian and Norian) | Aksala Formation | Canada ( Yukon)  Italy | A member of the family Bairdiidae. |
| Bairdia yukonensis | Sp. nov | Valid | Forel in Forel et al. | Late Triassic (Norian) | Aksala Formation | Canada ( Yukon) | A member of the family Bairdiidae. |
| Bairdiacypris xainzaensis | Sp. nov | In press | Song et al. | Late Devonian | Chaguoluoma Formation | China | |
| Bairdoppilata barremiana | Sp. nov | | Mojon in Mojon & De Kaenel | Early Cretaceous (Barremian) | | France  Switzerland | |
| Bradyleberis praecristatella | Sp. nov | | McDonald & Warne | Miocene | Bookpurnong Formation | Australia | |
| Callistocythere bookpurnongensis | Sp. nov | | McDonald & Warne | Miocene | Bookpurnong Formation | Australia | A species of Callistocythere. |
| Callistocythere mchenryi | Sp. nov | | McDonald & Warne | Miocene | Bookpurnong Formation | Australia | A species of Callistocythere. |
| Callistocythere zigzaga | Sp. nov | | McDonald & Warne | Miocene | Bookpurnong Formation | Australia | A species of Callistocythere. |
| Camptocythere (Anabarocythere) muricata | Sp. nov | Valid | Gerke & Lev in Tesakova | Middle Jurassic (Bathonian–Callovian) | | Russia | |
| Camptocythere (Anabarocythere) triangula | Sp. nov | Valid | Tesakova | Middle Jurassic (Bajocian and Bathonian) | | Russia ( Saratov Oblast) | |
| Camptocythere (Camptocythere) quinta | Sp. nov | Valid | Tesakova in Tesakova & Seltser | Jurassic | | Russia | |
| Camptocythere (Palaeoloxoconcha) caudata | Sp. nov | Valid | Tesakova in Tesakova & Seltser | Jurassic | | Russia | |
| Camptocythere (Palaeoloxoconcha) ryazanica | Sp. nov | Valid | Tesakova in Tesakova & Seltser | Jurassic | | Russia | |
| Ceratopsis persicus | Sp. nov | Valid | Salas in Poursalehi et al. | Ordovician (Katian–Hirnantian) | Katkoyeh Formation | Iran | A member of Podocopa belonging to the order Beyrichiocopida and the family Tetradellidae. |
| Cimbaurila ramdohri | Sp. nov | | Sciuto, Baldanza & Reitano | Early Pleistocene | | Italy | |
| Cistacythereis oertlii | Sp. nov | | Sciuto, Baldanza & Reitano | Early Pleistocene | | Italy | |
| Clavofabella? lanshella | Sp. nov | Valid | Guillam & Forel in Guillam et al. | Devonian (Famennian) | Gelaohe Formation | China | A member of Palaeocopida belonging to the family Primitiopsidae. |
| Cornutobairdia yukonella | Sp. nov | Valid | Forel in Forel et al. | Late Triassic (Norian) | Aksala Formation | Canada ( Yukon) | A member of the family Bairdiidae. |
| Costa agyrina | Sp. nov | | Sciuto, Baldanza & Reitano | Early Pleistocene | | Italy | |
| Cyprideis atalaiensis | Sp. nov | Valid | Linhares & Ramos | Early Miocene | Solimões Formation | Brazil | A member of the family Cytherideidae. |
| Cyprideis dictyon | Sp. nov | Valid | Linhares & Ramos | Middle to late Miocene | Solimões Formation | Brazil | A member of the family Cytherideidae. |
| Cyprideis indianaensis | Sp. nov | | Sousa & Ramos | Miocene | Pebas Formation | Peru | |
| Cyprideis santaelenae | Sp. nov | | Sousa & Ramos | Miocene | Pebas Formation | Peru | |
| Cyprideis soledadensis | Sp. nov | | Sousa & Ramos | Miocene | Pebas Formation | Peru | |
| Cytherellina caerulea | Sp. nov | Valid | Guillam & Forel in Guillam et al. | Devonian (Famennian) | Gelaohe Formation | China | A member of Podocopida belonging to the family Bairdiocyprididae. |
| Damonella pumila | Sp. nov | | Guzmán et al. | Early Cretaceous (Aptian) | Crato Formation | Brazil | |
| Deefgella? pulchra | Sp. nov | Valid | Melnikova et al. | Ordovician (Sandbian) | Gryazno Formation | Russia ( Leningrad Oblast) | |
| Echinocythereis hartmannii | Sp. nov | | Sciuto, Baldanza & Reitano | Early Pleistocene | | Italy | |
| Electrocypria | Gen. et sp. nov | Valid | Wang, Matzke-Karasz & Horne | Cretaceous (Albian–Cenomanian) | Burmese amber | Myanmar | A member of the family Candonidae belonging to the subfamily Paracypridinae. The type species is E. burmitei. |
| Eucytherura sanctavenerae | Sp. nov | | Sciuto, Baldanza & Reitano | Early Pleistocene | | Italy | |
| Fortistriginglymus | Gen. et comb. nov | | McDonald & Warne | Miocene | Bookpurnong Formation | Australia | Genus includes "Cythere" postdeclivis Chapman (1914). |
| Frodocythereis | Gen. et sp. nov | Valid | Puckett & Hunt | Late Cretaceous | | United States | Genus includes new species F. frodoi. |
| Glyptocythere bathonica | Sp. nov | Valid | Tesakova | Middle Jurassic (Bathonian) | | Kazakhstan  Russia | |
| Hungarella limella | Sp. nov | Valid | Forel in Forel et al. | Late Triassic (Norian) | Aksala Formation | Canada ( Yukon) | A member of Podocopa belonging to the family Healdiidae. |
| Ilyocypris coimbrai | Sp. nov | | Guzmán et al. | Early Cretaceous (Aptian) | Crato Formation | Brazil | |
| Karlingrella | Gen. et comb. nov | Valid | Groos-Uffenorde in Groos-Uffenorde et al. | Early Devonian | | Germany  Morocco  Spain | A member of Podocopida, possibly a member of the family Ropolonellidae. The type species is "Euglyphella" granulosa Blumenstengel (1962). |
| Kirkbya panamintensis | Sp. nov | Valid | McMenamin | Carboniferous (Mississippian) | Tin Mountain Limestone | United States ( California) | A member of Palaeocopida belonging to the group Beyrichicopina and the family Kirkbyidae. |
| Klyasinella | Gen. nov | Valid | Melnikova et al. | Ordovician (Sandbian) | Gryazno Formation | Russia ( Leningrad Oblast) | The type species is K. bella. |
| Kozuria | Gen. et comb. nov | Junior homonym | Forel | Middle and Late Triassic | | Hungary  Romania  Turkey | A new genus erected for Triassic ostracods formerly assigned to the genus Acanthoscapha, such as "Acanthoscapha" veghae Kozur (1970), "Acanthoscapha" mersinella Forel in Forel et al. (2017) and "Acanthoscapha" amphialata Kristan-Tollmann (1973). The generic name is preoccupied by the radiolarian genus Kozuria Zhang (1990). |
| Laevipellacythereis | Gen. et 2 sp. nov | Valid | Puckett & Hunt | Late Cretaceous | | United States | Genus includes new species L. colossus and L. laevipellis. |
| Leviella alexi | Sp. nov | | Forel, Kolar-Jurkovšek & Jurkovšek | Middle Triassic (Ladinian) | | Slovenia | |
| Leviella riedeli | Sp. nov | Valid | Forel in Forel et al. | Late Triassic (Norian) | Aksala Formation | Canada ( Yukon) | A member of the family Cytherellidae. |
| Lobobairdia whitella | Sp. nov | Valid | Forel in Forel et al. | Late Triassic (Norian) | Aksala Formation | Canada ( Yukon) | A member of the family Bairdiidae. |
| Longiscula? destorta | Sp. nov | Valid | Melnikova et al. | Ordovician (Sandbian) | Gryazno Formation | Russia ( Leningrad Oblast) | |
| Loxoconcha pokornyi | Sp. nov | | Sciuto, Baldanza & Reitano | Early Pleistocene | | Italy | |
| Mantelliana speculum | Sp. nov | Valid | Tomé et al. | Early Cretaceous (Aptian) | Romualdo Formation | Brazil | |
| Microceratina retangularis | Sp. nov | Valid | Tomé et al. | Early Cretaceous (Aptian) | Romualdo Formation | Brazil | |
| Mirabairdia canadia | Sp. nov | Valid | Forel in Forel et al. | Late Triassic (Norian) | Aksala Formation | Canada ( Yukon) | A member of the family Bairdiidae. |
| Mirabairdia slovenica | Sp. nov | | Forel, Kolar-Jurkovšek & Jurkovšek | Middle Triassic (Ladinian) | | Slovenia | |
| Mongolianella aptianensis | Sp. nov | Valid | Tomé et al. | Early Cretaceous (Aptian) | Romualdo Formation | Brazil | |
| Nanacythere octum | Sp. nov | Valid | Tesakova | Middle Jurassic | | Russia | |
| Nikitinella songliangensis | Sp. nov | In press | Zhang | Ordovician | Huadan Formation | China | |
| Paracandona rosaepraeceps | Sp. nov | Valid | Antonietto, Eaton & Park Boush | Paleogene | Claron Formation | United States ( Utah) | |
| Paracypris undulareventralis | Sp. nov | Valid | Tomé et al. | Early Cretaceous (Aptian) | Romualdo Formation | Brazil | |
| Paracytheridea longicristata | Sp. nov | | Sciuto, Baldanza & Reitano | Early Pleistocene | | Italy | |
| Parakeijia notoreticularis | Sp. nov | | McDonald & Warne | Miocene | Bookpurnong Formation | Australia | |
| Paranacythere | Gen. et sp. nov | Valid | Bergue et al. | Permian (Guadalupian) | Teresina Formation | Brazil | A possible member of the family Cytheruridae. The type species is P. nigripallus. |
| Pattersoncypris cucurves | Sp. nov | | Guzmán et al. | Early Cretaceous (Aptian) | Barbalha Formation | Brazil | |
| Pattersoncypris kroemmelbeini | Sp. nov | | Guzmán et al. | Early Cretaceous (Aptian) | | Brazil | |
| Perissocytheridea florisdorsalis | Sp. nov | Valid | Tomé et al. | Early Cretaceous (Aptian) | Romualdo Formation | Brazil | |
| Perissocytheridea oculusutilis | Sp. nov | Valid | Tomé et al. | Early Cretaceous (Aptian) | Romualdo Formation | Brazil | |
| Perissocytheridea poruslinearis | Sp. nov | Valid | Tomé et al. | Early Cretaceous (Aptian) | Romualdo Formation | Brazil | |
| Procytherura ippolitovi | Sp. nov | Valid | Tesakova in Tesakova & Seltser | Jurassic | | Russia | |
| Procytherura iyae | Sp. nov | Valid | Tesakova | Middle Jurassic | | Russia | |
| Quasillites (Beckjennites) gebeckeri | Sp. nov | Valid | Groos-Uffenorde in Groos-Uffenorde et al. | Early Devonian | Lower Yeraifa Formation | Morocco | A member of Podocopida belonging to the family Quasillitidae. |
| Rhinocypris spinata | Sp. nov | | Guzmán et al. | Early Cretaceous (Aptian) | Crato Formation | Brazil | |
| Sansabella gelaohensis | Sp. nov | Valid | Guillam & Forel in Guillam et al. | Devonian (Famennian) | Gelaohe Formation | China | A member of Palaeocopida belonging to the family Sansabellidae. |
| Satiellina zarandensis | Sp. nov | Valid | Salas in Poursalehi et al. | Ordovician (Katian–Hirnantian) | Katkoyeh Formation | Iran | A member of Podocopa belonging to the order Beyrichiocopida and the superfamily Drepanelloidea. |
| Sulcella baisuzhena | Sp. nov | Valid | Guillam & Forel in Guillam et al. | Devonian (Famennian) | Gelaohe Formation | China | A member of Platycopida belonging to the family Cavellinidae. |
| Tegmenia mariasophiae | Sp. nov | | Sciuto, Baldanza & Reitano | Early Pleistocene | | Italy | |
| Tenedocythere eleonorae | Sp. nov | | Sciuto, Baldanza & Reitano | Early Pleistocene | | Italy | |
| Trachycythere peculiaris | Sp. nov | Valid | Tesakova | Middle Jurassic | | Russia | |
| Tumulocythereis | Gen. et 3 sp. nov | Valid | Puckett & Hunt | Late Cretaceous | | United States | Genus includes new species T. incompta, T. tiberti and T. tumulus. |
| Velatomorpha pseudoaltilis | Sp. nov | Valid | Bergue et al. | Permian (Guadalupian) | Teresina Formation | Brazil | A member of Platycopida belonging to the family Carbonitidae. |
| Velatomorpha xavante | Sp. nov | Valid | Bergue et al. | Permian (Guadalupian) | Teresina Formation | Brazil | A member of Platycopida belonging to the family Carbonitidae. |
| Vendona spinifera | Sp. nov | In press | Zhang | Ordovician | Huadan Formation | China | |
| Zonocypris berthoui | Sp. nov | Valid | Piovesan et al. | Early Cretaceous (Aptian) | Crato Formation | Brazil | |
| Zonocypris dorsoconvexa | Sp. nov | Valid | Piovesan et al. | Early Cretaceous (Aptian) | Crato Formation | Brazil | |

### Other crustaceans
#### New taxa

| Name | Novelty | Status | Authors | Age | Type locality | Country | Notes |
| Arcoscalpellum s.l. hamurorum | Sp. nov | Valid | Karasawa & Amano | Miocene | Higashibessho Formation | Japan | A barnacle belonging to the family Scalpellidae. |
| Cetopirus polysyrinx | Sp. nov | | Collareta et al. | Pleistocene | | United States ( California Oregon) | A whale barnacle. |
| Dabashanella longa | Sp. nov | In press | Zhang | Cambrian Stage 3 | Shuijingtuo Formation | China | A member of Phosphatocopida. |
| Dabashanella semiorbiculata | Sp. nov | In press | Zhang | Cambrian Stage 3 | Shuijingtuo Formation | China | A member of Phosphatocopida. |
| Dabashanella unispinata | Sp. nov | In press | Zhang | Cambrian Stage 3 | Shuijingtuo Formation | China | A member of Phosphatocopida. |
| Dietericambria | Gen. et sp. nov | Valid | Peel | Cambrian (Wuliuan) | Henson Gletscher Formation | Greenland | A stem-group pentastomid. The type species is D. hensoniensis. |
| Heidiops | Gen. et comb. nov | Valid | Werneburg & Schneider | Permian (Kungurian) | Salagou Formation | France | A notostracan of uncertain affinities. The type species is "Triops cancriformis" permiensis Gand, Garric & Lapeyrie (1997), raised to the rank of the species Heidiops permiensis. |
| Koonwarrella | Gen. et sp. nov | In press | Van Houte, Hegna & Butler | Early Cretaceous (Aptian) | Koonwarra Fossil Bed | Australia | An anostracan, possibly a member of the family Thamnocephalidae. Genus includes new species K. peterorum. |
| Linglongtaestheria qinglongensis | Sp. nov | | Teng, Li & Zhang | Late Jurassic | Tiaojishan Formation | China | A clam shrimp. |
| Magnitocyclus | Gen. et sp. nov | Valid | Mychko et al. | Carboniferous (Viséan–Serpukhovian) | | Russia | A member of Cyclida. Genus includes new species M. struveae. |
| Pachyscalpellum saskatchewanensis | Comb. nov | valid | (Russell) | Upper Cretaceous (Maastrichtian) | Bearpaw Formation | Canada ( Saskatchewan) | A giant barnacle, formerly known as "Calantica" saskatchewanensis Russell (1967). |
| Protochelonibia starnesi | Sp. nov | Valid | Perreault, Collareta & Buckeridge | Oligocene (Rupelian) | Chickasawhay Formation | United States ( Mississippi) | A barnacle belonging to the family Chelonibiidae. |
| Rhabdostichus arcticensis | Sp. nov | Valid | Shen & Wu | Devonian | Melville Island Formation | Canada | A member of the clam shrimp or ostracod family Rhabdostichidae. |
| Thuringiops | Gen. et sp. nov | Valid | Werneburg & Schneider | Carboniferous (Gzhelian) to Permian (Sakmarian) | Upper Oberhof Formation | Germany | A calmanostracan branchiopod, possibly a member of Kazacharthra. The type species is T. nephroides. |
| Yanjiestheria huajiyingensis | Sp. nov | | Li | Early Cretaceous (Valanginian–Hauterivian) | Huajiying Formation | China | A clam shrimp. |

#### Other crustacean research

* Collareta et al. (2022) describe borings on a sea turtle carapace from the Miocene (Tortonian) Pisco Formation (Peru), interpreted as probable attachment scars produced by turtle barnacles, and argue that sea turtles may have hosted barnacle symbionts as early as during the early Oligocene.

## Radiodonts
### New taxa

| Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
| Innovatiocaris maotianshanensis | Gen. et sp. nov | Valid | Zeng et al. | Cambrian Stage 3 | Maotianshan Shales | China | A radiodont of uncertain family. Formerly described as Anomalocaris sp. and whole body specimen of "Anomalocaris" saron. | |
| "Innovatiocaris" multispiniformis | Sp. nov | Valid | Zeng et al. | Cambrian Stage 3 | Maotianshan Shales | China | A radiodont of uncertain family. | |

### Radiodont research

* New information on the anatomy of Stanleycaris hirpex, based on data from 268 specimens from the Cambrian Burgess Shale (British Columbia, Canada), is presented by Moysiuk & Caron (2022), who report exquisite preservation of the brain of this radiodont and unexpected presence of a large median eye.

## Trilobites
### New taxa

| Name | Novelty | Status | Authors | Age | Type locality | Location | Notes |
| Agerina boygeorgei | Sp. nov | Valid | Karim & Adrain | Ordovician (Floian) | | United States ( Nevada) | A member of the family Phillipsinellidae. |
| Aguaditaspis | Gen. et sp. nov | Valid | Randolfe, Rustán & Bignon | Devonian (Lochkovian-Pragian) | Talacasto Formation | Argentina | A member of the family Dalmanitidae. The type species is A. mediaspina. |
| Aitkenaspis | Gen. et sp. nov | Valid | Handkamer & Pratt in Handkamer, Pratt & MacNaughton | Cambrian | | Canada | Genus includes new species A. keelensis. |
| Albertelloides eliasi | Sp. nov | Valid | Handkamer & Pratt in Handkamer, Pratt & MacNaughton | Cambrian | | Canada | |
| Amphitryon constrictus | Sp. nov | In press | Wei & Zhou in Wei et al. | Ordovician (Katian) | Daduhe Formation | China | |
| Anebocephalus | Gen. et sp. nov | Valid | Sundberg & Webster | Cambrian Stage 4 | Harkless Formation | United States ( Nevada) | Genus includes new species A. silverpeakensis. |
| Arndellaspis | Gen. et sp. nov | Valid | Holloway, Banks & Banks | Silurian (Rhuddanian) | Arndell Sandstone | Australia | A member of the family Encrinuridae. The type species is A. oryxis. |
| Auritolithus | Gen. et sp. nov | Valid | Holloway, Banks & Banks | Ordovician (Katian) | Arndell Sandstone | Australia | A member of the family Trinucleidae. The type species is A. corbetti. |
| Bignonops | Gen. et comb. nov | Valid | Van Viersen & Kloc | Devonian | Timnrhanrhart Formation | Morocco | Monotypic genus in Acastidae. The type species is B. tamnrhertus. |
| Bolbolenellus dodoensis | Sp. nov | Valid | Handkamer & Pratt in Handkamer, Pratt & MacNaughton | Cambrian | | Canada | |
| Brongniartella calveri | Sp. nov | Valid | Holloway, Banks & Banks | Silurian (Rhuddanian) | Arndell Sandstone | Australia | A member of the family Homalonotidae. |
| Cambrosaurura | Gen. et comb. et 2 sp. nov | Valid | Geyer in Cederström et al. | Cambrian | Jbel Wawrmast Formation | Morocco | A member of the family Ellipsocephalidae belonging to the subfamily Ellipsocephalinae. The type species is "Ornamentaspis" usitata Geyer (1990); genus also includes new species C. bommeli and C. robusta, and possibly also Ornamentaspis? todraensis Geyer (1990). |
| Catillicephala cifellii | Sp. nov | Valid | Westrop & Dengler | Cambrian (Guzhangian) | Shallow Bay Formation | Canada ( Newfoundland and Labrador) | A member of the family Catillicephalidae. |
| Chelediscus garzoni | Sp. nov | Valid | Collantes et al. | Cambrian Stage 4 | | Spain | |
| Clarksonops | Gen. et sp. nov | Disputed | Crônier & Waters | Devonian (Famennian) | Hongguleleng Formation | China | A phacopid trilobite. Genus includes new species C. junggariensis. The genus Clarksonops was subsequently considered to be a junior synonym of the genus Omegops by Zong (2023), resulting in a new combination Omegops junggariensis. |
| Coenoides | Gen. et sp. nov | Valid | Sundberg & Webster | Cambrian Stage 4 | Harkless Formation | United States ( Nevada) | Genus includes new species C. scholteni. |
| Cuneoaxiella | Gen. et comb. nov | Valid | Cederström et al. | Cambrian | Gislöv Formation | Morocco  Sweden | A member of the family Ellipsocephalidae belonging to the subfamily Protoleninae. The type species is "Proampyx" grandis Ahlberg & Bergström (1978); genus also includes "Cambrunicornia" agdziensis Geyer (1990). |
| Dellingia | Gen. et comb. nov | Valid | Cederström et al. | Cambrian | Gislöv Formation | Sweden | A member of the family Ellipsocephalidae belonging to the subfamily Ellipsocephalinae. The type species is "Comluella" scanica Ahlberg & Bergström (1978). |
| Dodoella | Gen. et sp. nov | Valid | Handkamer & Pratt in Handkamer, Pratt & MacNaughton | Cambrian | | Canada | Genus includes new species D. kobayashii. |
| Ellipsostrenua brevifrons | Sp. nov | Valid | Cederström et al. | Cambrian | Gislöv Formation | Sweden | A member of the family Ellipsocephalidae belonging to the subfamily Ellipsocephalinae. |
| Ellipsostrenua simrica | Sp. nov | Valid | Cederström et al. | Cambrian | Gislöv Formation | Sweden | A member of the family Ellipsocephalidae belonging to the subfamily Ellipsocephalinae. |
| Ellipsostrenua troedssoni | Sp. nov | Valid | Cederström et al. | Cambrian | Gislöv Formation | Sweden | A member of the family Ellipsocephalidae belonging to the subfamily Ellipsocephalinae. |
| Eobathyuriscus | Gen. et 2 sp. nov | Valid | Handkamer & Pratt in Handkamer, Pratt & MacNaughton | Cambrian | | Canada | Genus includes new species E. mackenziensis and E. macqueeni. |
| Eosaukia anhuiensis | Sp. nov | Valid | Lei & Peng | Cambrian (Furongian) | Chaumitien Formation | China | A saukiid trilobite. |
| Epichalnipsus bergstroemi | Sp. nov | Valid | Cederström et al. | Cambrian | Gislöv Formation | Sweden | A member of the family Ellipsocephalidae belonging to the subfamily Strenuaevinae. |
| Fantasticolithus | Gen. et sp. nov | | Fortey & Gutiérrez-Marco | Early Ordovician | | Peru | A trinucleid trilobite. Genus includes new species F. isabelae. |
| Forteyaspis | Gen. et 2 sp. et comb. nov | Valid | Karim & Adrain | Ordovician | | Canada  United Kingdom | A member of the family Phillipsinellidae. The type species is F. idoli; genus also includes new species F. adamanti, as well as "Agerina" laurentica Ingham & Tripp (1991) and "Agerina" norrisi Ludvigsen (1980). |
| Geigibole kohleichensis | Sp. nov | Valid | Müller & Hahn | Carboniferous (Viséan) | | Germany | |
| Glossopleura youngi | Sp. nov | Valid | Handkamer & Pratt in Handkamer, Pratt & MacNaughton | Cambrian | | Canada | |
| Gondwanaspis eisbornensis | Sp. nov | Valid | Helling & Becker | Devonian (probably early Frasnian) | Hagen-Balve Formation | Germany | A member of the family Odontopleuridae. |
| Gondwanaspis schloesseri | Sp. nov | Valid | Helling & Becker | Devonian (probably Givetian) | Hofermühle Formation | Germany | A member of the family Odontopleuridae. |
| Gravicalymene clarkei | Sp. nov | Valid | Holloway, Banks & Banks | Silurian (Rhuddanian) | Arndell Sandstone | Australia | A member of the family Calymenidae belonging to the subfamily Calymeninae. |
| Harklessaspis | Gen. et 2 sp. nov | Valid | Sundberg & Webster | Cambrian Stage 4 | Harkless Formation | United States ( Nevada) | Genus includes new species H. rasettii and H. parvigranulosus. |
| Hollardops angustifrons | Sp. nov | Valid | Van Viersen & Kloc | Devonian | Timrhanrhart Formation | Morocco | A member of the family Acastidae. |
| Hollardops klugi | Sp. nov | Valid | Van Viersen & Kloc | Devonian | Seheb El Rhassel Group | Morocco | A member of the family Acastidae. |
| Hollardops kyriarchos | Sp. nov | Valid | Van Viersen & Kloc | Devonian | Khebchia Formation | Morocco | A member of the family Acastidae. |
| Hollardops luscus | Sp. nov | Valid | Van Viersen & Kloc | Devonian | El Otfal Formation | Morocco | A member of the family Acastidae. |
| Hollardops multatuli | Sp. nov | Valid | Van Viersen & Kloc | Devonian | Khebchia Formation | Morocco | A member of the family Acastidae. |
| Ivanites | Gen. et sp. nov | Valid | Randolfe, Rustán & Bignon | Devonian (Lochkovian-Pragian) | Talacasto Formation | Argentina | A member of the family Dalmanitidae. The type species is I. leonorae. |
| Japonoscutellum senectum | Sp. nov | Valid | Holloway, Banks & Banks | Silurian (Rhuddanian) | Arndell Sandstone | Australia | A member of the family Scutelluidae. |
| Kettneraspis plumula | Sp. nov | Valid | Flick & Flick | Devonian (Eifelian) | | Germany | A member of the family Odontopleuridae. |
| Kongqiaoheia sarytumensis | Sp. nov | Valid | Ghobadi Pour | Ordovician | | Kazakhstan | |
| Liostracina fuluensis | Sp. nov | Valid | Yang et al. | Cambrian (Guzhangian) | Longha Formation | China | A member of Ptychopariida belonging to the family Liostracinidae. |
| Mackenzieaspis | Gen. et 2 sp. nov | Valid | Handkamer & Pratt in Handkamer, Pratt & MacNaughton | Cambrian | | Canada | Genus includes new species M. parallelispinosa and M. divergens. |
| Malongullia sinensis | Sp. nov | In press | Wei & Zhou in Wei et al. | Ordovician (Katian) | Daduhe Formation | China | |
| Malongullia zhenxiongensis | Sp. nov | In press | Wei & Zhou in Wei et al. | Ordovician (Katian) | Daduhe Formation | China | |
| Mexicaspidella | Nom. nov | Not Valid | Handkamer & Pratt in Handkamer, Pratt & MacNaughton | Cambrian | | Mexico  United States | A replacement name for Mexicaspis Lochman (1948). Not valid because prior replacement: Caspimexis Özdikmen 2005 in: Paleontological Journal 39(5):563-564 |
| Miaopopsis sokyrensis | Sp. nov | Valid | Ghobadi Pour | Ordovician | | Kazakhstan | |
| Minicryphaeus suavius | Sp. nov | Valid | Van Viersen & Kloc | Devonian | Seheb El Rhassel Group | Morocco | A member of the family Acastidae. |
| Mynaralaspis | Gen. et sp. nov | Valid | Ghobadi Pour | Ordovician | | Kazakhstan | Genus includes new species M. perforata. |
| Needmorella | Gen. et sp. nov | Valid | Holloway & Scott | Devonian | Needmore Shale | United States (( Pennsylvania ( Virginia West Virginia) | A member of the family Dalmanitidae belonging to the subfamily Synphoriinae. The type species is N. simoni. |
| Niuchangella agastor | Sp. nov | Valid | Holloway, Banks & Banks | Silurian (Rhuddanian) | Arndell Sandstone | Australia | A member of the family Brachymetopidae. |
| Oenonella otherfellersorum | Sp. nov | Valid | Adrain & Fortey | Ordovician (Darriwilian) | Table Cove Formation | Canada ( Newfoundland and Labrador) | |
| Oenonella wasisnamei | Sp. nov | Valid | Adrain & Fortey | Ordovician (Darriwilian) | Table Cove Formation | Canada ( Newfoundland and Labrador) | |
| Pedinopariops? requadti | Sp. nov | Valid | Flick & Flick | Devonian (Eifelian) | | Germany | A member of the family Phacopidae. |
| Peltura hutchinsoni | Sp. nov | Valid | Nguyen, Westrop & Landing | Cambrian (Furongian) | Chelsey Drive Group | Canada ( Nova Scotia) | An olenid trilobite. |
| Peltura undulata | Sp. nov | | Nielsen et al. | Cambrian (Furongian) | Alum Shale Formation | Norway  Sweden | An olenid trilobite. |
| Pepodes | Gen. et sp. nov | Valid | Holloway, Banks & Banks | Silurian (Rhuddanian) | Arndell Sandstone | Australia | A member of the family Illaenidae. The type species is P. agrestis. |
| Persiax | Nom. nov | Valid | Lerosey-Aubril & Deshmukh | Carboniferous (Tournaisian) | | Iran | A replacement name for Persia Lerosey-Aubril (2012). |
| Platykardiapyge | Gen. et comb. nov | Valid | Van Viersen & Kloc | Devonian | Ihandar Formation | Morocco | Genus in Acastidae. The type species is P. maderensis; genus also includes P. aequisulcata. |
| Pricyclopyge keralensis | Sp. nov | Valid | Ghobadi Pour | Ordovician | | Kazakhstan | |
| Prosaukia xiaoxianensis | Sp. nov | Valid | Lei & Peng | Cambrian (Furongian) | Chaumitien Formation | China | A saukiid trilobite. |
| Sahtuia | Gen. et sp. nov | Valid | Handkamer & Pratt in Handkamer, Pratt & MacNaughton | Cambrian | | Canada | Genus includes new species S. carcajouensis. |
| Salterocoryphe? bailliei | Sp. nov | Valid | Holloway, Banks & Banks | Ordovician (Katian) | Arndell Sandstone | Australia | A member of the family Calymenidae belonging to the subfamily Colpocoryphinae. |
| Sculptoproetus (Macroblepharum) bithynicus | Sp. nov | Valid | Flick & Flick | Devonian (Emsian) | | Turkey | A member of the family Proetidae belonging to the subfamily Cornuproetinae. |
| Shumardia karasaiensis | Sp. nov | Valid | Ghobadi Pour | Ordovician | | Kazakhstan | |
| Taklamakania paucisegmentatus | Sp. nov | In press | Wei & Zhou in Wei et al. | Ordovician (Katian) | Daduhe Formation | China | |
| Toxotiformis | Gen. et comb. et 5 sp. nov | Valid | Makarova | Cambrian | | Russia | The type species is "Toxotis" venustus Lazarenko (1968); genus also includes new species T. artus, T. kotuyensis, T. nelegensis, T. tuberculosus and T. ventosus. |
| Triarthrus akkermensis | Sp. nov | Valid | Ghobadi Pour | Ordovician | | Kazakhstan | |
| Vietnamia hyron | Sp. nov | Valid | Holloway, Banks & Banks | Ordovician (Katian) | Arndell Sandstone | Australia | A member of the family Calymenidae belonging to the subfamily Reedocalymeninae. |

### Trilobite research

* A study on patterns of segment allocation and expression in the bodies of trilobites throughout their evolutionary history is published by Hopkins & To (2022), who argue that neither taxonomic turnover nor enrolment behaviour of trilobites can sufficiently explain the studied changes of segmentation patterns.
* A study on the early evolutionary history of trilobites is published by Holmes & Budd (2022), who argue that the first appearance datum of trilobites in the fossil record closely reflects their evolutionary origins, and that there is no compelling evidence to suggest an extended cryptic evolutionary history for this group.
* Bicknell et al. (2022) describe malformed trilobite specimens from the Cambrian Beetle Creek Formation (Australia), Chisholm Formation (Nevada, United States) and Wheeler Formation (Utah, United States) and from the Ordovician Llanfawr Mudstones (Wales, United Kingdom), and attempt to determine the origin of the studied injuries.
* A study on the injured specimens of Redlichia takooensis and Redlichia rex from the Cambrian Emu Bay Shale (Australia) is published by Bicknell et al. (2022), who argue that R. rex was likely the chief producer of the injuries in the studied specimen and of large shelly coprolites in the Emu Bay Shale biota, and represents one of the earliest cannibalistic trilobites.
* Losso & Ortega-Hernández (2022) report evidence of the presence of significantly modified and reduced endopodites underneath the seventh thoracic and first pygidial tergites of Olenoides serratus and interpret these appendages as likely functional analogs to claspers.
* A study on the phylogenetic relationships of members of the olenid group Hypermecaspidinae is published by Monti, Tortello & Confalonieri (2022).
* Revision of Ordovician trilobite collections from Shan State (Myanmar) and Yunnan (China), first described by F.R.C. Reed, is published by Fortey, Wernette & Hughes (2022).
* A study on the growth and mortality of Triarthrus eatoni, reevaluating the data presented by Cisne (1973), is published by Pauly & Holmes (2022).
* Edgecombe & Fortey (2022) describe a specimen of Asaphellus tataensis from the Fezouata Formation (Morocco) preserved with antennae bearing a series of round, dome-shaped organs of uncertain homology and function, larger than sensilla on the antennae of other arthropods.
* A study on the degree and structure of modularity in the heads of Calyptaulax annulata and Cloacaspis senilis is published by Vargas-Parra & Hopkins (2022), who consider the best modularity models to be those in which the eyes and anteriormost cranidium formed a single module, or belonged to two modules that highly covaried relative to other modules.
* Bicknell & Smith (2022) seven new abnormal specimens of Odontopleura (Sinespinaspis) markhami from the Silurian (Telychian) Cotton Formation (Australia), interpreting their abnormalities as teratological developments through genetic malfunctions, and evaluate likely causes of abnormalities in Silurian trilobite specimens in general.
* A study on the distribution patterns of Devonian trilobites from Morocco and northwestern Algeria through time and space is published by Bault, Crônier & Bignon (2022).
* A study on the morphological diversity and possible relationship between morphology and environmental and/or ecological factors in Devonian trilobites from North Africa is published by Bault, Crônier & Monnet (2022).
* A study on changes in global distribution of trilobites during the late Paleozoic is published by Brezinski (2022).
* A study on functional morphology, coaptation and palaeoecology of selected acastid trilobites was published by Van Viersen & Kloc (2022).
* A study on the morphological diversity of cephalic sclerites of asteropygine acastids throughout their evolutionary history is published by Martin et al. (2022).

## Other arthropods
### New taxa

| Name | Novelty | Status | Authors | Age | Type locality | Country | Notes |
| Acheronauta | Gen. et sp. nov | Valid | Pulsipher et al. | Silurian | Waukesha Lagerstätte | United States ( Wisconsin) | A vermiform arthropod, possibly a basal member of Mandibulata. Genus includes new species A. stimulapis. |
| Astutuscaris | Gen. et sp. nov | Valid | Jiao & Du | Cambrian Stage 4 | Wulongqing Formation | China | A member of Euarthropoda of uncertain affinities. The type species is A. bispinifer. |
| Balhuticaris | Gen. et sp. nov | Valid | Izquierdo-López & Caron | Cambrian | Burgess Shale | Canada ( British Columbia) | A bivalved arthropod belonging to the group Hymenocarina. The type species is B. voltae. |
| Cyrtoctenus bambachi | Sp. nov | Valid | Plotnick & Lamsdell | Carboniferous (Tournaisian) | Price Formation | United States ( Virginia) | A hibbertopterid eurypterid. |
| Erettopterus qujingensis | Sp. nov | Valid | Ma et al. | Silurian (Pridolí) | Yulongsi Formation | China | A pterygotid eurypterid. |
| Erratus | Gen. et sp. nov | | Fu et al. | Cambrian Stage 3 | Helinpu Formation | China | An early carapace-bearing arthropod. The type species is E. sperare. |
| Fengzhengia | Gen. et sp. nov | Valid | O'Flynn et al. | Cambrian Stage 3 | Chiungchussu Formation | China | A member of Euarthropoda of uncertain affinities. The type species is F. mamingae. |
| Guangyuanolimulus | Gen. et sp. nov | | Hu et al. | Permian-Triassic transition | | China | A member of Xiphosura, possibly an early horseshoe crab. Genus includes new species G. shangsiensis. |
| Hibbertopterus lamsdelli | Sp. nov | In press | Braddy, Lerner & Lucas | Late Carboniferous | | United States ( New Mexico) | A eurypterid. |
| Lunataspis borealis | Sp. nov | In press | Lamsdell et al. | Ordovician (Sandbian) | Gull River Formation | Canada ( Ontario) | A member of Xiphosurida. |
| Malongia | Gen. et sp. nov | | Wang et al. | Devonian (Lochkovian) | Xiaxishancun Formation | China | A eurypterid belonging to the family Dolichopteridae. Genus includes new species M. mirabilis. |
| Masticaris | Gen. et sp. nov | Valid | Harvey & Butterfield | Cambrian Stage 4 | Mount Clark Formation | Canada ( Northwest Territories) | An arthropod described on the basis of mandibles co-occurring with small carbonaceous fossils. The type species is M. fimbriata. |
| Mieridduryn | Gen. et sp. nov | Valid | Pates et al. | Ordovician (Darriwilian) | Gilwern Volcanic Formation | United Kingdom | An opabiniid-like stem-arthropod. The type species is M. bonniae. |
| Monstrodesmus grimaldii | Sp. nov | Valid | Su, Cai & Huang | Cretaceous | Burmese amber | Myanmar | A millipede belonging to the family Trichopolydesmidae. |
| Paleolimulus mazonensis | Sp. nov | Valid | Bicknell, Naugolnykh & McKenzie | Carboniferous (Moscovian) | Carbondale Formation | United States ( Illinois) | A member of Xiphosura belonging to the family Paleolimulidae. |
| Parahughmilleria fuea | Sp. nov | | Ma et al. | Devonian (Lochkovian) | Xiaxishancun Formation | China | An adelophthalmid eurypterid. |
| Pterygotus wanggaii | Sp. nov | | Ma et al. | Devonian (Lochkovian) | Xiaxishancun Formation | China | A pterygotid eurypterid. |
| Tomlinsonus | Gen. et sp. nov | Valid | Moysiuk et al. | Ordovician (Katian) | Kirkfield Formation | Canada ( Ontario) | A marrellomorph arthropod. The type species is T. dimitrii. |
| Utahnax | Gen. et sp. nov | Valid | Lerosey-Aubril & Ortega-Hernández | Cambrian (Drumian) | | United States ( Utah) | A Dinocaridid. The type species is U. vannieri. |
| Utaurora | Gen. et sp. nov | Valid | Pates et al. | Cambrian (Drumian) | Wheeler Formation | United States ( Utah) | An opabiniid. The type species is U. comosa. |
| Vermontcaris | Gen. et sp. nov | Valid | Pari, Briggs & Gaines | Cambrian Stage 4 | | United States ( Vermont) | A bivalved arthropod. Genus includes new species V. montcalmi. |
* Redescription of Chuandianella ovata, based on data from new specimens from the Yu’anshan Member of the Chiungchussu Formation (Cambrian Stage 3; Yunnan, China) preserving unprecedented details of their soft anatomy, is published by Zhai et al. (2022).
* A study on the ventral aspect of head organization of Jianfengia multisegmentalis, and on its evolutionary significance, is published by Zhang et al. (2022).
* Redescription of Triopus draboviensis is published by Van Roy, Rak & Fatka (2022), who also provide a revised diagnosis for Cheloniellida, and exclude Parioscorpio venator from this clade.
* Redescription of the ventral morphology of Retifacies abnormalis and a study on the implications of this taxon for the knowledge of the relationships and evolution of Cambrian artiopods is published by Zhang et al. (2022).
* A study on the appendicular organization in Pygmaclypeatus daziensis and on its ecological and evolutionary implications is published by Schmidt et al. (2022).
* Description of the organization of the central nervous system of a specimen of Mollisonia symmetrica from the Burgess Pass (Burgess Shale; British Columbia, Canada) is published by Ortega-Hernández et al. (2022).
* A study on the evolutionary stability in the history of fossil and living xiphosurids is published by Bicknell et al. (2022).
* Revision of Australian xiphosurids Austrolimulus fletcheri, Dubbolimulus peetae, Tasmaniolimulus patersoni and Victalimulus mcqueeni, and a study on the temporal range of these taxa is published by Bicknell et al. (2022), who reinterpret T. patersoni as living in the Triassic rather than Permian.
* New specimen of Vaderlimulus tricki, providing new information on the anatomy of this xiphosuran and representing the first record of muscles in an austrolimulid reported to date, is described from the Olenekian Thaynes Group (Idaho, United States) by Lerner & Lucas (2022).
* A study on the ontogenetic stages, allometry and ecology of Paleolimulus kunguricus is published by Naugolnykh & Bicknell (2022).
* A study on the anatomy of the chelicerae of Slimonia acuminata, based on data from a new specimen, is published by Lamsdell (2022).
* Braddy & Gass (2022) redescribe tracks from the Ordovician Martinsburg Formation (New York, United States) assigned to the ichnotaxon Palmichnium gallowayi, attribute these tracks to a medium-sized stylonurid eurypterid, and interpret them as the earliest trace fossil evidence for mass migrations of eurypterids into nearshore environments to molt and mate.
* Biomechanical study of the chelicerae of pterygotid eurypterids is published by Bicknell et al. (2022), who argue that pterygotid chelicerae were functionally analogous to scorpion chelae, and that Erettopterus bilobus and Pterygotus anglicus had a generalised diet and were apex predators of their ecosystems, while Acutiramus bohemicus was adapted to piercing and slicing the cuticle of other eurypterids, and Jaekelopterus rhenaniae was adapted to capturing large, highly mobile, armoured prey.
* New fossil material of Tuzoia with exceptionally preserved soft tissues is described from the Cambrian Burgess Shale (Canada) by Izquierdo-López & Caron (2022), who interpret this arthropod as adapted to predation or scavenging while swimming along the seafloor, and interpret it as an early member of Hymenocarina.
* A study on the functional morphology of Ercaicunia multinodosa, aiming to determine the posture used by this arthropod to overcome resistance and to obtain most lift while sliding in the water column, is published by Li et al. (2022).

## General research

* Review of the paleontological, phylogenomic and molecular clock evidence pertaining to the possibly Cambrian terrestrialization of the arthropods is published Tihelka et al. (2022).