# 2013 in arthropod paleontology

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This list of fossil arthropods described in 2013 is a list of new taxa of trilobites, fossil insects, crustaceans, arachnids and other fossil arthropods of every kind that have been described during the year 2013. The list only includes taxa at the level of genus or species.

## Arachnids

| Name | Novelty | Status | Authors | Age | Unit | Location | Notes |
| Amiracarus pliocennatus | Sp. nov | Valid | Miko et al. | Pliocene to Pleistocene | | Slovenia | An oribatid mite. |
| Chaerilobuthus longiaculeus | Sp. nov | Valid | Lourenço | Cenomanian | Burmese amber | Myanmar | A scorpion, a species of Chaerilobuthus. |
| Friularachne | Gen. et sp. nov | Valid | Dalla Vecchia & Selden | Late Triassic (Norian) | Dolomia di Forni Formation | Italy | A member of Mygalomorphae, possibly an atypoid. The type species is Friularachne rigoi. |
| Gondwanascorpio | Gen. et sp. nov | Valid | Gess | Devonian (Famennian) | Witpoort Formation | South Africa | A scorpion of uncertain phylogenetic placement. The type species is Gondwanascorpio emzantsiensis. |
| Labidostoma (Pseudocornutella) electri | Subgen. et sp. nov | Valid | Sidorchuk & Bertrand | Eocene | | Europe | A labidostomatid mite found in Baltic amber, a species of Labidostoma. |
| Lagonomegops? cor | Sp. nov | Valid | Pérez-de la Fuente, Saupe & Selden | Early Cretaceous (Albian) | | Spain | A lagonomegopid found in Albian Spanish amber, possibly a species of Lagonomegops. |
| Mongolarachne | Gen. et comb. nov | Valid | Selden, Shih & Ren | Middle or Late Jurassic | | China | A member of Araneomorphae related to the group Orbiculariae; a new genus for "Nephila" jurassica Selden, Shih & Ren (2011). |
| Permotarbus | Gen. et sp. nov | Valid | Dunlop & Rößler | Early Permian | | Germany | A member of Trigonotarbida. The type species is Permotarbus schuberti. |
| Sellnickiella balticae | Sp. nov | Valid | Sidorchuk & Bertrand | Eocene | | Europe | A labidostomatid mite found in Baltic amber, a species of Sellnickiella. |
| Soplaogonomegops | Gen. et sp. nov | Valid | Pérez-de la Fuente, Saupe & Selden | Early Cretaceous (Albian) | | Spain | A lagonomegopid found in Albian Spanish amber. The type species is Soplaogonomegops unzuei. |
| Spinomegops | Gen. et 2 sp. nov | Valid | Pérez-de la Fuente, Saupe & Selden | Early Cretaceous (Albian) | | Spain | A lagonomegopid found in Albian Spanish amber. Genus contains two species: S. arcanus and S. aragonensis. |
| Talbragaraneus | Gen. et sp. nov | Valid | Selden & Beattie | Jurassic | Talbragar Fossil Fish Bed | Australia | A possible member of Uloboridae. The type species is Talbragaraneus jurassicus. |
| Tityus azari | Sp. nov. | Disputed | Lourenço | Late Eocene or early Oligocene | | Dominican Republic | A buthid scorpion found in Dominican amber, a species of Tityus. Teruel (2017) considered this species to be a junior synonym of Tityus geratus Santiago-Blay & Poinar (1988), while Lourenço (2017) considered it to be a distinct species. |
| Tynecotarbus | Gen. et sp. nov | Valid | Hradská & Dunlop | Carboniferous (late Pennsylvanian) | | Czech Republic | A member of Trigonotarbida. The type species is Tynecotarbus tichaveki. |

## Crustaceans

| Name | Novelty | Status | Authors | Age | Unit | Location | Notes | Images |
| Acareprosopon | Gen. et comb. nov | Valid | Klompmaker | Early Cretaceous (late Albian) | Eguino Formation | Spain | A crab belonging to the family Prosopidae. The type species is "Pithonoton" bouvieri Van Straelen (1944). | |
| Acratia? hamadai | Sp. nov | Valid | Tanaka, Ono & Maeda in Tanaka et al. | Middle Permian | | Japan | An ostracod, possibly a species of Acratia. | |
| Acratia? jeanvannieri | Sp. nov | Valid | Forel in Forel et al. | Late Permian to Early Triassic | | Hungary | An acratiid ostracod, a possible species of Acratia. | |
| Acratia nagyvisnyoensis | Sp. nov | Valid | Forel in Forel et al. | Late Permian (Changhsingian) | Nagyvisnyó Limestone Formation | Hungary | An acratiid ostracod, a species of Acratia. | |
| Acratia? okumurai | Sp. nov | Valid | Tanaka in Tanaka et al. | Middle Permian | | Japan | An ostracod, possibly a species of Acratia. | |
| Aeger luxii | Sp. nov | Valid | Huang et al. | Middle Triassic | Guanling Formation | China | A penaeoid, a species of Aeger. | |
| Aegyptoleberis | Gen. et comb. nov | Valid | Boukhary, Bassiouni & Sharabi in Boukhary et al. | Paleocene | | Egypt | An ostracod; a new genus for "Cythereis" coronata Esker (1968). | |
| Albaidaplax | Gen. et sp. nov | Valid | Garassino, Pasini & Castro | Pliocene to early Pleistocene | | Italy  Spain | A goneplacid crab. The type species is Albaidaplax ispalensis. Announced in 2013; validated in 2023. | |
| Albenizus | Gen. et sp. nov | Valid | Klompmaker | Early Cretaceous (late Albian) | Eguino Formation | Spain | A crab belonging to the family Torynommidae. The type species is Albenizus minutus. | |
| Ambulocapsa | Gen. et 4 sp. nov | Valid | Robins, Feldmann & Schweitzer | Late Jurassic (Tithonian) | Ernstbrunn Limestone | Austria | A munidopsid galatheoid. Genus contains four species: Ambulocapsa altilis, Ambulocapsa bachmayeri, Ambulocapsa novacula and Ambulocapsa sentosa. | |
| Antrimpos germanicus | Sp. nov | Valid | Brandt & Schulz | Middle Triassic | Trochitenkalk Formation | Germany | A member of the family Penaeidae. Originally described as a species of Antrimpos, but subsequently transferred to the genus Gladiocaris. | |
| Amphicytherura fragilis | Sp. nov | Valid | Nicolaidis & Piovesan in Piovesan et al. | Early Cretaceous (Albian) | São Mateus Formation | Brazil | An ostracod belonging to the family Cytheridae. Originally described as a species of Amphicytherura; Antonietto et al. (2016) transferred the species to the genus Aracajuia. | |
| Angarestia | Gen. et comb. et 3 sp. nov | Valid | Charbonnier et al. | Jurassic and Cretaceous | | Antarctica  Australia  Italy  Lebanon | A member of the family Glypheidae. A new genus for "Glyphea" australensis Feldmann, Tshudy & Thomson (1993); genus also includes "Glyphea" tricarinata Garassino (1996), "Glyphea" foresti Feldmann & de Saint Laurent (2002), and "Glyphea" damesi Garassino (2001), as well as new species A. viallei, A. anatoliensis and A. mugudaensis. | |
| Ankylokypha | Gen. et sp. nov | Valid | Robins, Feldmann & Schweitzer | Late Jurassic (Tithonian) | Ernstbrunn Limestone | Austria | A munidopsid galatheoid. The type species is Ankylokypha parabola. | |
| Archaeoportunus | Gen. et sp. nov | Valid | Artal, Ossó & Domínguez | Early Eocene (Ypresian) | Roda Formation | Spain | A crab, a member of Portunoidea. The type species is Archaeoportunus isabenensis. | |
| Archaeotetra lessinea | Sp. nov | Valid | De Angeli & Ceccon | Eocene (Ypresian) | | Italy | A trapeziid trapezioid, a species of Archaeotetra. | |
| Arcoscalpellum concavitectum | Sp. nov | Valid | Carriol | Pliocene | | France | A barnacle, a species of Arcoscalpellum. | |
| Astiplax | Gen. et sp. nov | Valid | Garassino & Pasini | Late Pliocene | | Italy | A goneplacid crab. The type species is Astiplax aspera. | |
| Audogaster | Gen. et comb. et sp. nov | Valid | Charbonnier et al. | Triassic | | Germany | A member of Glypheoidea belonging to the family Litogastridae. Genus includes "Pseudopemphix" spinosus Assmann (1927), as well as new species A. assmanni. | |
| Aulavescus | Gen. et 2 sp. nov | Valid | Robins, Feldmann & Schweitzer | Late Jurassic (Tithonian) | Ernstbrunn Limestone | Austria | A munidopsid galatheoid. Genus contains two species: Aulavescus exutus and Aulavescus tectus. | |
| Aurikirkbya kinshozanensis | Sp. nov | Valid | Tanaka in Tanaka et al. | Middle Permian | | Japan | An ostracod, a species of Aurikirkbya. | |
| Aysegulina mbassisensis | Sp. nov | Valid | Sarr | Paleocene (Thanetian) | | Senegal | An ostracod belonging to the family Trachyleberididae. | |
| Aysegulina papillata | Sp. nov | Valid | Sarr | Paleocene-Eocene (Thanetian-Lutetian) | | Guinea-Bissau  Senegal | An ostracod belonging to the family Trachyleberididae. | |
| Bachmayerus | Gen. et sp. nov | Valid | Fraaije et al. | Late Jurassic to Early Cretaceous (Tithonian to early Berriasian) | Štramberk Limestone | Czech Republic | A hermit crab, a member of Diogenidae. The type species is Bachmayerus cavus. | |
| Bairdia akasakaensis | Sp. nov | Valid | Tanaka in Tanaka et al. | Middle Permian | | Japan | An ostracod, a species of Bairdia. | |
| Bairdia anisongae | Sp. nov | Valid | Forel in Forel et al. | Late Permian to Early Triassic | | Hungary | A bairdiid ostracod, a species of Bairdia. | |
| Bairdia baudini | Nom. nov | Valid | Crasquin in Forel et al. | Late Permian to Early Triassic | | China  Hungary  Turkey | A replacement name for the bairdiid ostracod species Bairdia subsymmetrica (Shi in Shi and Chen, 1987). | |
| Bairdia davehornei | Sp. nov | Valid | Forel in Forel et al. | Late Permian to Early Triassic | | Hungary | A bairdiid ostracod, a species of Bairdia. | |
| Bairdia nishiwakii | Sp. nov | Valid | Tanaka & Nishimura in Tanaka et al. | Middle Permian | | Japan | An ostracod, a species of Bairdia. | |
| Bairdia oogakiensis | Sp. nov | Valid | Tanaka in Tanaka et al. | Middle Permian | | Japan | An ostracod, a species of Bairdia. | |
| Bairdiacypris chaabetensis | Sp. nov | Valid | Andreu et al. | Late Cretaceous | | Morocco | An ostracod. | |
| Bairdiacypris? hayasakai | Sp. nov | Valid | Tanaka in Tanaka et al. | Middle Permian | | Japan | An ostracod, possibly a species of Bairdiacypris. | |
| Bathycalliax mediterranea | Sp. nov | Valid | Baldanza et al. | Early Pleistocene | | Italy | A member of Callianassidae, a species of Bathycalliax. | |
| Bittnerilia pentagonalis | Sp. nov | Valid | Beschin, De Angeli & Zarantonello | Eocene | | Italy | A crab belonging to the family Parthenopidae. | |
| Bonizzatoides | Gen. et sp. nov | Valid | Beschin, Busulini & Tessier | Eocene | | Italy | A raninid crab. The type species is Bonizzatoides tuberculatus. | |
| Boschettocheles | Gen. et sp. nov | Valid | Beschin, De Angeli & Zarantonello | Eocene | | Italy | Genus includes new species B. magnum. | |
| Brachycythere multidifferentis | Sp. nov | Valid | Nicolaidis & Piovesan in Piovesan et al. | Late Cretaceous (Cenomanian-Turonian) | Florianópolis Formation Itajaí-Açu Formation Itanhaém Formation | Brazil | An ostracod belonging to the family Brachycytheridae. Originally described as a species of Brachycythere; transferred to the genus Sapucariella by Puckett, Andreu & Colin (2016). | |
| Brasacypris subovatum | Sp. nov | Valid | Do Carmo et al. | Early Cretaceous (Aptian) | Alagamar Formation | Brazil | An ostracod, a species of Brasacypris. | |
| Bulbileaia | Gen. et sp. nov | Valid | Niu in Niu et al. | Late Permian | Taohaiyingzi Formation | China | A clam shrimp. The type species is Bulbileaia orientalis. | |
| Bullariscus | Gen. et 4 sp. nov | Valid | Robins, Feldmann & Schweitzer | Late Jurassic (Tithonian) | Ernstbrunn Limestone | Austria | A munidopsid galatheoid. Genus contains four species: Bullariscus arcuotorus, B. gibbernodus, B. patruliusi and B. triquetrus. | |
| Bythocypris amelkisensis | Sp. nov | Valid | Andreu et al. | Late Cretaceous | | Algeria  Morocco | An ostracod. | |
| Calappilia minuta | Sp. nov | Valid | Beschin, Busulini & Tessier | Eocene | | Italy | A calappid crab, a species of Calappilia. | |
| Callianassa (s.l.) ocozocoautlaensis | Sp. nov | Valid | Hyžný, Vega & Coutiño | Late Cretaceous (early Maastrichtian) | Ocozocoautla Formation | Mexico | A member of Callianassidae, a species of Callianassa (sensu lato). Announced in 2013; validated in 2023. | |
| Callicythere? balvanyseptentrioensis | Sp. nov | Valid | Forel in Forel et al. | Late Permian to Early Triassic | | Hungary | A bythocytherid ostracod, a possible species of Callicythere. | |
| Candonocypris fimibolus | Sp. nov | Valid | Matzke-Karasz et al. | Early Miocene (23–16 Ma) | Riversleigh | Australia | An ostracod, a species of Candonocypris. | |
| Cavellina hashintotoi | Sp. nov | Valid | Tanaka & Maeda in Tanaka et al. | Middle Permian | | Japan | An ostracod, a species of Cavellina. | |
| Cenomanocarcinus nammourensis | Sp. nov | Valid | Beschin & De Angeli | Late Cretaceous (Cenomanian) | | Lebanon | A raninoid crab, a species of Cenomanocarcinus. | |
| Cenomanocarcinus robertsi | Sp. nov | Valid | Feldmann et al. | Late Cretaceous (Campanian) | | United States | A raninoid crab, a species of Cenomanocarcinus. | |
| Charybdis (Charybdis) kinugawai | Sp. nov | Valid | Karasawa in Karasawa & Kinugawa | Late Pliocene | Ananai Formation | Japan | A portunid crab, a species of Charybdis. | |
| Chondromaia | Gen. et sp. nov | Valid | Feldmann et al. | Late Cretaceous (early Maastrichtian) | Mount Laurel Formation | United States | A majid crab. The type species is Chondromaia antiqua. | |
| Cirolana feldmanni | Sp. nov | Valid | Hyžný, Bruce & Schlögl | Early Miocene (late Karpatian, latest Burdigalian in the Mediterranean scale) | Lakšárska Nová Ves Formation | Slovakia | A cirolanid isopod, a species of Cirolana. | |
| Codoisopus | Gen. et sp. nov | Valid | Lindoso, Carvalho & Mendes | Early Cretaceous (Aptian) | Codó Formation | Brazil | An archaeoniscid isopod. The type species is Codoisopus brejensis. | |
| Costa ? deklaszi | Sp. nov | Valid | Sarr | Paleocene (Selandian-Thanetian) | | Senegal | An ostracod belonging to the family Trachyleberididae. | |
| Cracensigillatus | Gen. et 2 sp. et comb. nov | Valid | Robins, Feldmann & Schweitzer | Late Jurassic (Kimmeridgian and Tithonian) | Ernstbrunn Limestone | Austria  Romania | A munidopsid galatheoid. Genus contains two new species: Cracensigillatus gracilirostrus and Cracensigillatus prolatus, as well as the species Cracensigillatus acutirostrus (Moericke, 1889). | |
| Cretamaja | Gen. et sp. nov | Valid | Klompmaker | Early Cretaceous (late Albian) | Eguino Formation | Spain | A crab belonging to the group Majoidea and the family Priscinachidae. The type species is Cretamaja granulata. | |
| Cryptopagurus | Gen. et sp. nov | Valid | Schweigert et al. | Early Jurassic (late Pliensbachian) | | Germany | A hermit crab. The type species is Cryptopagurus svenhofmanni. | |
| Ctenocheles fabianii | Sp. nov | Valid | Beschin, Busulini & Tessier | Eocene | | Italy | A member of Axiidea, a species of Ctenocheles. | |
| Culmenformosa | Gen. et 3 sp. nov | Valid | Robins, Feldmann & Schweitzer | Late Jurassic (Tithonian) | Ernstbrunn Limestone | Austria | A munidopsid galatheoid. Genus contains three species: Culmenformosa glaessneri, Culmenformosa nephelepera and Culmenformosa triastrixosa. | |
| Cycleryon bourseaui | Sp. nov | Valid | Audo et al. | Late Jurassic | | France | An eryonid, a species of Cycleryon. | |
| Cytherella tazzouguertensis | Sp. nov | Valid | Andreu et al. | Late Cretaceous | | Algeria  Morocco | An ostracod. | |
| Cytherellina? magyarorszagensis | Sp. nov | Valid | Forel in Forel et al. | Early Triassic (Griesbachian) | Gerennavár Limestone Formation | Hungary | A bairdiocypridid ostracod, a possible species of Cytherellina. | |
| Cytherelloidea saloumensis | Sp. nov | Valid | Sarr | Paleocene-Eocene (Thanetian-Ypresian) | | Senegal | An ostracod belonging to the family Cytherellidae. | |
| Cytheropteron dakhlaensis | Sp. nov | Valid | Boukhary & Bassiouni in Boukhary et al. | Paleocene | | Egypt | An ostracod. | |
| Cytheropteron mbeyensis | Sp. nov | Valid | Sarr | Paleocene (Selandian-Thanetian) | | Senegal | An ostracod belonging to the family Cytheruridae. | |
| Dahomeya reticulata | Sp. nov | Valid | Sarr | Paleocene (Thanetian) | | Senegal | An ostracod belonging to the family Brachycytheridae. | |
| Demania ahramensis | Sp. nov | Valid | Yazdi et al. | Middle Miocene | Mishan Formation | Iran | A xanthid crab, a species of Demania. | |
| Dinglecythere | Gen. et comb. nov | Valid | Antonietto et al. | Late Cretaceous (Santonian) to Eocene (Priabonian) | | Australia  Jamaica  South Africa  United States | An ostracod belonging to the group Podocopida and the family Cytheridae. The type species is "Amphicytherura" tumida Dingle (1969); genus also includes "Amphicytherura" iniqua Holden (1964), "Amphicytherura" zululandensis Dingle (1980), "Amphicytherura" armatus Dingle (1981), "Amphicytherura" dinglei McKenzie et al. (1993) and "Amphicytherura" occulta Puckett & Colin in Puckett, Colin & Mitchell (2012). | |
| Diogenes lessineus | Sp. nov | Valid | Beschin, De Angeli & Zarantonello | Eocene | | Italy | A crab belonging to the family Diogenidae. | |
| Discoidella niculaei | Sp. nov | Valid | Sebe in Sebe, Crasquin & Grădinaru | Middle Triassic (Anisian) | | Romania | An ostracod belonging to the family Polycopidae. | |
| Distefania lauginigeri | Sp. nov | Valid | Feldmann et al. | Late Cretaceous (Campanian) | | United States | A goniodromitid homolodromioid crab, a species of Distefania. | |
| Enoploclytia tepeyacensis | Sp. nov | Valid | Vega, Garassino & Zapata Jaime | Late Cretaceous (Campanian) | | Mexico | An erymid, a species of Enoploclytia. Announced in 2013; validated in 2023. | |
| Eocytheropteron yoroensis | Sp. nov | Valid | Sarr | Paleocene (Thanetian) | | Senegal | An ostracod belonging to the family Cytheruridae. | |
| Eosestheria yaozhanensis | Sp. nov | Valid | Wang | Late Jurassic | Dabeigou Formation | China | A clam shrimp, a species of Eosestheria. | |
| Etyus makrochele | Sp. nov | Valid | Feldmann, Schweitzer & Lehmann | Early Cretaceous (late Albian) | | Germany | An etyiid crab, a species of Etyus. | |
| Eumiraculum desmaresae | Sp. nov | Valid | Forel in Forel et al. | Late Permian (Changhsingian) | Nagyvisnyó Limestone Formation | Hungary | An ostracod of uncertain affinities, a species of Cytherellina. | |
| Eurotetralia | Gen. et comb. nov | Valid | De Angeli & Ceccon | Eocene | | Hungary  Italy | A tetraliid trapezioid; a new genus for "Trapezia" loerenthey Müller (1975). | |
| Fossocytheridea ballentae | Sp. nov | Valid | Piovesan & Nicolaidis in Piovesan et al. | Cretaceous (Albian-Santonian) | Florianópólis Formation Itajaí-Açú Formation | Brazil | An ostracod belonging to the family Cytherideidae. | |
| Fossocytheridea elegans | Sp. nov | Valid | Piovesan & Nicolaidis in Piovesan et al. | Early Cretaceous (Albian) | Florianópólis Formation | Brazil | An ostracod belonging to the family Cytherideidae. | |
| Gastrodorus kotoucensis | Sp. nov | Valid | Fraaije et al. | Late Jurassic to Early Cretaceous (Tithonian to early Berriasian) | Štramberk Limestone | Czech Republic | A hermit crab, a member of Gastrodoridae; a species of Gastrodorus. | |
| Gastrosacus aequabus | Sp. nov | Valid | Robins, Feldmann & Schweitzer | Late Jurassic (Tithonian) | Ernstbrunn Limestone | Austria | A munidopsid galatheoid, a species of Gastrosacus. | |
| Gastrosacus levocardiacus | Sp. nov | Valid | Robins, Feldmann & Schweitzer | Late Jurassic (Tithonian) | Ernstbrunn Limestone | Austria | A munidopsid galatheoid, a species of Gastrosacus. | |
| Gastrosacus limacurvus | Sp. nov | Valid | Robins, Feldmann & Schweitzer | Late Jurassic (Tithonian) | Ernstbrunn Limestone | Austria | A munidopsid galatheoid, a species of Gastrosacus. | |
| Gastrosacus pisinnus | Sp. nov | Valid | Robins, Feldmann & Schweitzer | Late Jurassic (Tithonian) | Ernstbrunn Limestone | Austria | A munidopsid galatheoid, a species of Gastrosacus. | |
| Gastrosacus torosus | Sp. nov | Valid | Robins, Feldmann & Schweitzer | Late Jurassic (Tithonian) | Ernstbrunn Limestone | Austria | A munidopsid galatheoid, a species of Gastrosacus. | |
| Gaudipluma | Gen. et sp. nov | Valid | Artal et al. | Eocene | | Spain | A retroplumid crab. The type species is Gaudipluma bacamortensis. | |
| Gifuaparchites | Gen. et sp. nov | Valid | Tanaka & Maeda in Tanaka et al. | Middle Permian | | Japan | An ostracod. The type species is Gifuaparchites takagii. | |
| Gigacerina | Gen. et comb. nov | Valid | Charbonnier et al. | Late Jurassic | | France | A member of the family Glypheidae. Genus includes "Glyphea" saemanni Oppel (1861). | Gigacerina saemanni |
| Glyphea macromuscula | Sp. nov | Valid | Feldmann & Schweitzer | Early Jurassic | | United Kingdom | A glypheoid, a species of Glyphea. | |
| Glypheopsis trouvillensis | Sp. nov | Valid | Charbonnier et al. | Late Jurassic | | France | A member of the family Glypheidae. | |
| Glypheopsis voultensis | Sp. nov | Valid | Charbonnier et al. | Middle Jurassic | La Voulte-sur-Rhône | France | A member of the family Glypheidae. | |
| Glypturus persicus | Sp. nov | Valid | Hyžný et al. | Middle-Late Miocene | | Iran | A callianassid, a species of Glypturus. | |
| Harbinia crepata | Sp. nov | Valid | Do Carmo et al. | Early Cretaceous (Aptian) | Alagamar Formation | Brazil | An ostracod, a species of Harbinia. | |
| Harbinia dimorphica | Sp. nov | Valid | Do Carmo et al. | Early Cretaceous (Aptian) | Alagamar Formation | Brazil | An ostracod, a species of Harbinia. | |
| Hardapestheria | Gen. et sp. nov | Valid | Stigall et al. | Early Jurassic | Kalkrand Formation | Namibia | An eosestheriid clam shrimp. The type species is Hardapestheria maxwelli. | |
| Hazelina ? foundiougnensis | Sp. nov | Valid | Sarr | Paleocene (Thanetian) | | Senegal | An ostracod belonging to the family Trachyleberididae. | |
| Hemicycloleaia | Gen. et sp. nov | Valid | Niu in Niu et al. | Late Permian | Taohaiyingzi Formation | China | A clam shrimp. The type species is Hemicycloleaia curtus. | |
| Hemiparacytheridea sagittaemucronata | Sp. nov | Valid | Andreu et al. | Late Cretaceous | | Morocco | An ostracod. | |
| Hermanites ? pustulosa | Sp. nov | Valid | Sarr | Eocene | | Mauritania  Senegal | An ostracod belonging to the family Trachyleberididae. | |
| Heterocypris collaris | Sp. nov | Valid | Matzke-Karasz et al. | Early Miocene (23–16 Ma) | Riversleigh | Australia | An ostracod, a species of Heterocypris. | |
| Hollinella fengqinglaii | Sp. nov | Valid | Crasquin in Forel et al. | Late Permian (Changhsingian) | Nagyvisnyó Limestone Formation | Hungary | A hollinellid ostracod, a species of Hollinella. | |
| Housacheles | Gen. et sp. nov | Valid | Fraaije et al. | Late Jurassic to Early Cretaceous (Tithonian to early Berriasian) | Štramberk Limestone | Czech Republic | A hermit crab, a member of Parapylochelidae. The type species is Housacheles timidus. | |
| Hungarella gerennavarensis | Sp. nov | Valid | Crasquin in Forel et al. | Early Triassic (Griesbachian) | Gerennavár Limestone Formation | Hungary | A healdiid ostracod, a species of Hungarella. | |
| Joeranina colombiana | Sp. nov | Valid | Bermúdez et al. | Early Cretaceous (middle Albian) | | Colombia | A palaeocorystid decapod, a species of Joeranina. | |
| Joeranina goshourajimensis | Sp. nov | Valid | Karasawa & Komatsu | Early Cretaceous (late Albian) | Enokuchi Formation | Japan | A palaeocorystid raninoid crab, a species of Joeranina. | |
| Joeranina houssineaui | Sp. nov | Valid | Van Bakel | Late Cretaceous (Cenomanian) | | France | A palaeocorystid decapod, a species of Joeranina. | |
| Kellnerius | Gen. et sp. nov | Valid | Santana et al. | Early Cretaceous (Albian) | Romualdo Formation | Brazil | A palaemonid. The type species is Kellnerius jamacaruensis. | |
| Keslingiella? teresae | Sp. nov | Valid | Salas, Rustán & Sterren | Devonian | Punta Negra Formation | Argentina  South Africa? | An ostracod belonging to the group Podocopida and possibly to the family Quasillitidae. | |
| Knebelia totoroi | Sp. nov | Valid | Audo et al. | Late Jurassic (late Kimmeridgian to early Tithonian) | | Germany | An eryonid, a species of Knebelia. | |
| Koskobilius | Gen. et sp. nov | Valid | Klompmaker | Early Cretaceous (late Albian) | Eguino Formation | Spain | A crab belonging to the group Majoidea and the family Priscinachidae. The type species is Koskobilius postangustus. | |
| Laeviprosopon crassum | Sp. nov | Valid | Klompmaker | Early Cretaceous (late Albian) | Eguino Formation | Spain | A crab belonging to the family Prosopidae, a species of Laeviprosopon. | |
| Laeviprosopon edoi | Sp. nov | Valid | Klompmaker | Early Cretaceous (late Albian) | Eguino Formation | Spain | A crab belonging to the family Prosopidae, a species of Laeviprosopon. | |
| Laeviprosopon hispanicum | Sp. nov | Valid | Klompmaker | Early Cretaceous (late Albian) | Eguino Formation | Spain | A crab belonging to the family Prosopidae, a species of Laeviprosopon. | |
| Laeviprosopon planum | Sp. nov | Valid | Klompmaker | Early Cretaceous (late Albian) | Eguino Formation | Spain | A crab belonging to the family Prosopidae, a species of Laeviprosopon. | |
| Langdaia bullabalvanyensis | Sp. nov | Valid | Crasquin in Forel et al. | Early Triassic | | Hungary  Italy | An ostracod, a species of Langdaia. | |
| Lapazites trinodis | Sp. nov | Valid | Salas, Rustán & Sterren | Devonian (Emsian) | Punta Negra Formation | Argentina | An ostracod belonging to the group Palaeocopida and the superfamily Kloedenelloidea. | |
| Latheticocarcinus italicus | Sp. nov | Valid | De Angeli & Ceccon | Eocene (Ypresian) | | Italy | A crab belonging to the family Homolidae. | |
| Lessinilambrus | Gen. et sp. nov | Valid | Beschin, De Angeli & Zarantonello | Eocene | | Italy | A crab belonging to the family Parthenopidae. Genus includes new species L. paleogenicus. | |
| Liuzhinia bankutensis | Sp. nov | Valid | Forel in Forel et al. | Late Permian to Early Triassic | | Hungary | An ostracod, a species of Liuzhinia. | |
| Liuzhinia venninae | Sp. nov | Valid | Forel in Forel et al. | Early Triassic (Griesbachian) | Gerennavár Limestone Formation | Hungary | An ostracod, a species of Liuzhinia. | |
| Loxoconcha akrabouensis | Sp. nov | Valid | Andreu et al. | Late Cretaceous | | Morocco | An ostracod. | |
| Loxoconcha ? ngolothiensis | Sp. nov | Valid | Sarr | Paleocene (Thanetian) | | Senegal | An ostracod belonging to the family Loxoconchidae. | |
| Meridecaris | Gen. et sp. nov | Valid | Stockar & Garassino | Middle Triassic (Ladinian) | Meride Limestone | Switzerland | A clytiopsid decapod. The type species is Meridecaris ladinica. | |
| Metahomarus | Gen. et sp. nov | Valid | Franţescu | Early Cretaceous (Albian) | Pawpaw Shale | United States | A lobster. The type species is Metahomarus reidi. | |
| Mexicania | Gen. et sp. nov | Valid | Garassino et al. | Late Cretaceous (Cenomanian) | Sierra Madre Formation | Mexico | A member of Sicyoniidae. The type species is M. grijalvaensis. | |
| Microcheilinella egerensis | Sp. nov | Valid | Forel in Forel et al. | Early Triassic (Griesbachian) | Gerennavár Limestone Formation | Hungary | A pachydomellid ostracod, a species of Microcheilinella. | |
| Moianella | Gen. et sp. nov | Valid | Ossó & Domínguez | Late Eocene (Priabonian) | | Spain | A crab, possibly a member of Cancroidea. The type species is Moianella cervantesi. | |
| Mokaya | Gen. et sp. nov | Valid | Garassino et al. | Late Cretaceous (Cenomanian) | Sierra Madre Formation | Mexico | A member of Sergestidae. The type species is M. changoensis. | |
| Mongolitubulus aspermachaera | Sp. nov | Valid | Topper et al. | Cambrian (Furongian) | | Sweden | A mongolitubulid, a member of Bradoriida; a species of Mongolitubulus. | |
| Nantocyclois | Gen. et sp. nov | Valid | Beschin, Busulini & Tessier | Eocene | | Italy | A calappid crab. The type species is Nantocyclois eocenicus. | |
| Navarrara | Gen. et sp. nov | Valid | Klompmaker | Early Cretaceous (late Albian) | Eguino Formation | Spain | A crab belonging to the group Glaessneropsoidea and the family Longodromitidae. The type species is Navarrara betsieae. | |
| Nestoria donggouensis | Sp. nov | Valid | Wang | Early Cretaceous | Qingshuihe Formation | China | A clam shrimp, a species of Nestoria. | |
| Nestoria jungarensis | Sp. nov | Valid | Wang | Early Cretaceous | Qingshuihe Formation | China | A clam shrimp, a species of Nestoria. | |
| Nestoria shawanensis | Sp. nov | Valid | Wang | Early Cretaceous | Qingshuihe Formation | China | A clam shrimp, a species of Nestoria. | |
| Newnhamia mckenziana | Sp. nov | Valid | Matzke-Karasz et al. | Early Miocene (23–16 Ma) | Riversleigh | Australia | An ostracod, a species of Newnhamia. | |
| Nigeroloxoconcha itanhaensis | Sp. nov | Valid | Nicolaidis & Piovesan in Piovesan et al. | Late Cretaceous (Cenomanian) | Itanhaém Formation | Brazil | An ostracod belonging to the family Loxoconchidae. | |
| Notopoides nantoensis | Sp. nov | Valid | Beschin, Busulini & Tessier | Eocene | | Italy | A raninid crab, a species of Notopoides. | |
| Octoeurax | Gen. et sp. nov | Valid | Robins, Feldmann & Schweitzer | Late Jurassic (Tithonian) | Ernstbrunn Limestone | Austria | A munidopsid galatheoid. The type species is Octoeurax acaresprora. | |
| Ordonyia dabadibensis | Sp. nov | Valid | Boukhary & Sharabi in Boukhary et al. | Paleocene | | Egypt | An ostracod. | |
| Orhomalus arpi | Sp. nov | Valid | Schweigert et al. | Early Jurassic (late Toarcian) | | Germany | A hermit crab, a species of Orhomalus. | |
| Orhomalus dubrullei | Sp. nov | Valid | Schweigert et al. | Early Jurassic (late Pliensbachian) | | France | A hermit crab, a species of Orhomalus. | |
| Orthonotacythere spinata | Sp. nov | Valid | Sarr | Paleocene (Thanetian) | | Senegal | An ostracod belonging to the family Cytheruridae. | |
| Oryctocaris | Gen. et comb. nov | Valid | Bergmann & Rust | Early Devonian | | Germany | A phyllocarid; a new genus for "Nahecaris" balssi Broili (1930). | |
| Paguritergites | Gen. et sp. nov | Valid | Fraaije et al. | Early Cretaceous (late Albian) | Eguino Formation | Spain | A hermit crab, possibly a member of Paguridae. The type species is Paguritergites yvonnecooleae. | |
| Palaeobenthesicymus | gen. et comb nov | Valid | Audo & Charbonnier | Late Santonian | Sahel Alma Lagerstätte | Lebanon | A benthesicymid penaeoid, a new genus for "Penaeus" libanensis (Brocchi, 1875). | |
| Palaeocypridina | Gen. et 2 sp. nov | Valid | Crasquin in Sebe, Crasquin & Grădinaru | Middle Triassic (Anisian) | | Romania | An ostracod belonging to the family Cypridinellidae. The type species is P. tulceaensis Sebe in Sebe, Crasquin & Grădinaru; genus also includes P. agighiolensis Sebe in Sebe, Crasquin & Grădinaru. | |
| Palinurus veronicae | Sp. nov | Valid | Franţescu | Early Cretaceous (Albian) | Pawpaw Shale | United States | A lobster, a species of Palinurus. | |
| Panopeus bericus | Sp. nov | Valid | Beschin, Busulini & Tessier | Eocene | | Italy | A panopeid crab, a species of Panopeus. | |
| Paracypria? elongata | Sp. nov | Valid | Do Carmo et al. | Early Cretaceous (Aptian) | Alagamar Formation | Brazil | An ostracod, possibly a species of Paracypria. | |
| Paracypris eniotmetos | Sp. nov | Valid | Nicolaidis & Piovesan in Piovesan et al. | Cretaceous (Albian-Santonian) | Florianópolis Formation Itanhaém Formation Juréia Formation São Mateus Formation | Brazil | An ostracod belonging to the family Candonidae. | |
| Paraglyphea mistelgauensis | Sp. nov | Valid | Charbonnier et al. | Early Jurassic | | Germany | A member of the family Glypheidae. | |
| Parallelogastrus | Gen. et sp. nov | Valid | Franţescu | Early Cretaceous (Albian) | Pawpaw Shale | United States | A lobster. The type species is Parallelogastrus gabii. | |
| Parapalaemonetes | Gen. st sp. nov | Valid | Brandt & Schulz | Middle Triassic (Ladinian) | Meißner Formation | Germany | A member of the family Palaemonidae. The type species is P. thuringiacus. | |
| Parapylochelitergites | Gen. et sp. nov | Valid | Fraaije et al. | Early Cretaceous (late Albian) | Eguino Formation | Spain | A hermit crab, possibly a member of Parapylochelidae. The type species is Parapylochelitergites pustulosus. | |
| Paratetralia sulcata | Sp. nov | Valid | De Angeli & Ceccon | Eocene (Ypresian) | | Italy | A trapeziid trapezioid, a species of Paratetralia. | |
| Parthenope chiampensis | Sp. nov | Valid | Beschin, De Angeli & Zarantonello | Eocene | | Italy | A crab belonging to the family Parthenopidae. | |
| Pauline | Gen. et sp. nov | Valid | Siveter et al. | Silurian | Wenlock Group | United Kingdom | A cylindroleberidid myodocope ostracod. The type species is Pauline avibella. | |
| Pegomyrmekella | Gen. et sp. nov | Valid | Robins, Feldmann & Schweitzer | Late Jurassic (Tithonian) | Ernstbrunn Limestone | Austria | A munidopsid galatheoid. The type species is Pegomyrmekella chaulia. | |
| Philyra karkata | Sp. nov | Valid | Rai et al. | Early Miocene | Khari Nadi Formation | India | A leucosiid crab, a species of Philyra. | |
| Pircawayra | Gen. et comb. et sp. nov | Valid | Salas, Rustán & Sterren | Devonian | Belén Formation Punta Negra Formation Talacasto Formation | Argentina  Bolivia  South Africa? | An ostracod belonging to the group Palaeocopida and the superfamily Kloedenelloidea. The type species is "Pinnatulites"? peregrina Přibyl (1984); genus also includes new species P. gigantea. | |
| Planocarcinus johnjagti | Sp. nov | Valid | Bermúdez et al. | Early Cretaceous (late Aptian) | | Colombia | A necrocarcinid raninoid crab, a species of Planocarcinus. | |
| Pokornyella lagandongi | Sp. nov | Valid | Sarr | Paleocene (Thanetian) | | Senegal | An ostracod belonging to the family Hemicytheridae. | |
| Polzicaris | Gen. et comb. nov | Valid | Haug et al. | Late Cretaceous (Santonian) | | Lebanon | A member of Achelata; a new genus for "Eryoneicus" sahelalmae Roger (1944). | |
| Pontocypris tadighoustensis | Sp. nov | Valid | Andreu et al. | Late Cretaceous | | Morocco | An ostracod. | |
| Poupelicaris | Gen. et sp. nov | Valid | Racheboeuf & Gourvennec | Devonian (Lochkovian) | | Bolivia | A member of Phyllocarida. The type species is Poupelicaris elegans. | |
| Praemonoleaia | Gen. et 6 sp. nov | Valid | Niu in Niu et al. | Late Permian | Taohaiyingzi Formation | China | A clam shrimp. Genus contains species Praemonoleaia ampulliformis, P. elliptica, P. oblonga, P. ovalis, P. rotunda and P. subtriangularis. | |
| Procytherura? elongatissima | Sp. nov | Valid | Andreu et al. | Late Cretaceous | | Morocco | An ostracod. | |
| Protobuntonia baolensis | Sp. nov | Valid | Sarr | Paleocene (Selandian-Thanetian) | | Senegal | An ostracod belonging to the family Trachyleberididae. | |
| Puriana sokonensis | Sp. nov | Valid | Sarr | Paleocene (Thanetian) | | Senegal | An ostracod belonging to the family Trachyleberididae. | |
| Pylochelitergites alatus | Sp. nov | Valid | Fraaije et al. | Early Cretaceous (late Albian) | Eguino Formation | Spain | A hermit crab, possibly a member of Pylochelidae; a species of Pylochelitergites. | |
| Pylochelitergites rugosus | Sp. nov | Valid | Fraaije et al. | Early Cretaceous (late Albian) | Eguino Formation | Spain | A hermit crab, possibly a member of Pylochelidae; a species of Pylochelitergites. | |
| Pylochelitergites stramberkensis | Sp. nov | Valid | Fraaije et al. | Late Jurassic to Early Cretaceous (Tithonian to early Berriasian) | Štramberk Limestone | Czech Republic | A hermit crab, possibly a member of Pylochelidae; a species of Pylochelitergites. | |
| Rathbunassa | Gen. et comb. nov | Valid | Hyžný in Bermúdez et al. | Early Cretaceous | | Colombia  United States | A callianassid decapod, a new genus for "Callianassa" aquilae Rathbun (1935). | |
| Rectaglyphea | Gen. et sp. nov | Valid | Charbonnier et al. | Cretaceous | | United Kingdom | A member of the family Glypheidae. Genus includes new species R. howardae. | |
| Rehacythereis errachidiaensis | Sp. nov | Valid | Andreu et al. | Late Cretaceous | | Morocco | An ostracod. | |
| Rehacythereis zizensis | Sp. nov | Valid | Andreu et al. | Late Cretaceous | | Morocco | An ostracod. | |
| Reviya praecurukensis | Sp. nov | Valid | Forel in Forel et al. | Late Permian (Changhsingian) | Nagyvisnyó Limestone Formation | Hungary  Serbia? | A kirkbyid ostracod, a species of Reviya. | |
| Rolerithosia | Gen. et sp. nov | Valid | Collins, Villier & Breton | Late Cretaceous (Cenomanian) | | France | An etyiid crab. The type species is Rolerithosia lobulata. | |
| Rosacythere denticulata | Sp. nov | Valid | Tibert et al. | Early Cretaceous | Escucha Formation | Spain | An ostracod. | |
| Rosagammarus | Gen. et sp. nov | Valid | McMenamin, Zapata & Hussey | Late Triassic (Norian) | Luning Formation | United States | Originally interpreted as an amphipod; the holotype specimen was subsequently reinterpreted as the right half of a decapod tail of uncertain taxonomic affinity. The type species is Rosagammarus minichiellus. | |
| Scalpellum carentanensis | Sp. nov | Valid | Carriol | Pliocene | | France | A barnacle, a species of Scalpellum. | |
| Schernfeldia | Gen. et sp. nov | Valid | Winkler | Late Jurassic (early Tithonian) | Eichstätt Formation | Germany | An acratiid caridean shrimp of uncertain phylogenetic placement. The type species is Schernfeldia schweigerti. | |
| Schizocythere wiedmanni | Sp. nov | Valid | Sarr | Paleocene (Thanetian) | | Senegal | An ostracod belonging to the family Schizocytheridae. | |
| Schobertella | Gen. et 2 sp. nov | Valid | Schweigert et al. | Early Jurassic (late Hettangian to late Pliensbachian) | | Germany | A hermit crab. Genus contains species Schobertella simonsenetlangi and Schobertella hoelderi. | |
| Scyllarella adinae | Sp. nov | Valid | Franţescu | Early Cretaceous (Albian) | Pawpaw Shale | United States | A lobster, a species of Scyllarella. | |
| Seorsus kauffmani | Sp. nov | Valid | Feldmann et al. | Late Cretaceous (Turonian) | Mancos Shale | United States | A dakoticancroid crab. Originally described as a species of Seorsus, but subsequently transferred to the genus Synoriacarcinus. | |
| Serrablopluma | Gen. et sp. nov | Valid | Artal et al. | Eocene | | Spain | A retroplumid crab. The type species is Serrablopluma diminuta. | |
| Shemonaella? olempskaella | Sp. nov | Valid | Forel in Forel et al. | Late Permian (Changhsingian) | Nagyvisnyó Limestone Formation | Hungary | A paraparchitid ostracod, a possible species of Shemonaella. | |
| Shiheziestheria | Gen. et sp. nov | Valid | Wang | Early Cretaceous | Qingshuihe Formation | China | A clam shrimp. The type species is Shiheziestheria pangi. | |
| Shipingia weemsi | Sp. nov | Valid | Kozur, Franz & Bachmann | Late Triassic (late Carnian to early Norian) | Arnstadt Formation Weser Formation | Germany | A clam shrimp, a species of Shipingia. | |
| Soleryon | Gen. et 2 sp. et comb. nov | Valid | Audo et al. | Middle and Late Jurassic | | France  Germany | An eryonid. Genus contains two new species: Soleryon amicalis and S. schorri, as well as "Eryon" perroni Étallon (1859) and "Eryon" giganteus Van Straelen (1923). | |
| Spinogriphus | Gen. et sp. nov | Valid | Jaume, Pinardo-Moya & Boxshall | Early Cretaceous (late Barremian) | | Spain | An acadiocaridid, a member of Spelaeogriphacea. The type species is Spinogriphus ibericus. | |
| Squilla taulinanus | Sp. nov | Valid | Ahyong, Charbonnier & Garassino | Miocene (Burdigalian) | | France | A squillid mantis shrimp, a species of Squilla. | |
| Stenodactylina rogerfurzei | Sp. nov | Valid | Schweigert | Middle Jurassic (late Aalenian) | | Germany | An erymid decapod, a species of Stenodactylina. | |
| Systenobythere | Gen. et sp. nov | Valid | Warne & Whatley | Late Miocene | | Australia | An ostracod. The type species is Systenobythere archboldi. | |
| Tanidromites maerteni | Sp. nov | Valid | Fraaije et al. | Middle Jurassic (Bajocian) | | France | A tanidromitid crab, a relative of homolodromiids; a species of Tanidromites. Announced in 2013; validated in 2023. | |
| Tetralia vicetina | Sp. nov | Valid | De Angeli & Ceccon | Eocene (Ypresian) | | Italy | A tetraliid trapezioid, a species of Tetralia. | |
| Theriosynoecum arinnoensis | Sp. nov | Valid | Tibert et al. | Early Cretaceous | Escucha Formation | Spain | An ostracod. | |
| Theriosynoecum colini | Sp. nov | Valid | Do Carmo et al. | Early Cretaceous (Aptian) | Alagamar Formation | Brazil | An ostracod, a species of Theriosynoecum. | |
| Theriosynoecum escuchaensis | Sp. nov | Valid | Tibert et al. | Early Cretaceous | Escucha Formation | Spain | An ostracod. | |
| Theriosynoecum guzzoi | Sp. nov | Valid | Do Carmo et al. | Early Cretaceous (Aptian) | Alagamar Formation | Brazil | An ostracod, a species of Theriosynoecum. | |
| Tzeltalpenaeus | Gen. et sp. nov | Valid | Garassino et al. | Late Cretaceous (Cenomanian) | Sierra Madre Formation | Mexico | A member of Penaeidae. The type species is T. exilichelatus. | |
| Upogebia aronae | Sp. nov | Valid | Haug, Nyborg & Vega | Middle Eocene | Santiago Formation | United States | A member of Upogebiidae, a species of Upogebia. | |
| Urocythereis castelaini | Sp. nov | Valid | Sarr | Paleocene (Thanetian) | | Senegal | An ostracod belonging to the family Hemicytheridae. | |
| Urocythereis sinesaloumensis | Sp. nov | Valid | Sarr | Paleocene-Eocene (Thanetian-Ypresian) | | Senegal | An ostracod belonging to the family Hemicytheridae. | |
| Uromuellerina guiraudi | Sp. nov | Valid | Sarr | Eocene (Ypresian-Lutetian) | | Senegal | An ostracod belonging to the family Hemicytheridae. | |
| Veenia (Nigeria) mediacostarobusta | Sp. nov | Valid | Andreu et al. | Late Cretaceous | | Morocco | An ostracod. | |
| Veenia (Nigeria) tardaensis | Sp. nov | Valid | Andreu et al. | Late Cretaceous | | Morocco | An ostracod. | |
| Vetoplautus | Gen. et sp. nov | Valid | Robins, Feldmann & Schweitzer | Late Jurassic (Tithonian) | Ernstbrunn Limestone | Austria | A munidopsid galatheoid. The type species is Vetoplautus latimarginus. | |
| Wrangelleryon | Gen. et sp. nov | Valid | Feldmann, Schweitzer & Haggart | Early Jurassic (Hettangian) | Sandilands Formation | Canada | An eryonid. The type species is Wrangelleryon perates. | |
| Xestoleberis circinatus | Sp. nov | Valid | Andreu et al. | Late Cretaceous | | Morocco | An ostracod. | |
| Xestoleberis? preafricanensis | Sp. nov | Valid | Andreu et al. | Late Cretaceous | | Morocco | An ostracod. | |
| Zoquepenaeus | Gen. et sp. nov | Valid | Garassino et al. | Late Cretaceous (Cenomanian) | Sierra Madre Formation | Mexico | A member of Penaeidae. The type species is Z. spinirostratus. | |
| Zygastrocarcinus carolinasensis | Sp. nov | Valid | Klompmaker, Flores-Ventura & Vega | Late Cretaceous (late Campanian) | Cerro del Pueblo Formation | Mexico | A homolid crab, a species of Zygastrocarcinus. | |

## Trilobites

| Name | Novelty | Status | Authors | Age | Unit | Location | Notes |
| Acanthopyge (Belenopyge) estevei | Sp. nov | Valid | Corbacho & Kier | Devonian (Pragian) | Ihandar Formation | Morocco | A member of Lichida belonging to the family Lichidae, a species of Acanthopyge. |
| Acastava? lerougei | Sp. nov | Valid | Van Viersen | Devonian | Riviere Formation | Belgium | |
| Adelogonus oblongus | Sp. nov | Valid | Lin et al. | Cambrian | Liudaogou Group | China | A polymerid trilobite belonging to the family Proasaphiscidae, a species of Adelogonus. |
| Akantharges mbareki | Sp. nov | Valid | Corbacho & López-Soriano | Devonian (Eifelian) | | Morocco | A member of Lichida belonging to the family Lichidae, a species of Akantharges. |
| Basseiarges | Gen. et sp. nov | Disputed | Corbacho & López-Soriano | Devonian (Eifelian) | | Morocco | A member of Lichida belonging to the family Lichidae. The type species is Basseiarges mellishae. Van Viersen (2021) considered Basseiarges to be a junior synonym of the genus Akantharges. |
| Bathyurellus diclementsae | Sp. nov | Valid | Fortey & Bruton | Early Ordovician | Kirtonryggen Formation | Norway | A bathyurid proetid, a species of Bathyurellus. |
| Bolbocephalus gunnari | Sp. nov | Valid | Fortey & Bruton | Early Ordovician | Kirtonryggen Formation | Norway | A bathyurid proetid, a species of Bolbocephalus. |
| Bolbochasmops kaskovoensis | Sp. nov | Valid | Krueger | Ordovician | | Russia | A member of the family Pterygometopidae. |
| Cambrunicornia? jafnaensis | Sp. nov | Valid | Elicki & Geyer | Cambrian | | Jordan | A protolenine ellipsocephalid, possibly a species of Cambrunicornia. |
| Canningbole | Gen. et 3 sp. nov | Valid | Feist & McNamara | Late Devonian | Virgin Hills Formation | Australia | A member of Proetida. The type species is Canningbole latimargo; genus also contains C. henwoodorum and C. macromma. |
| Catochia hinlopensis | Sp. nov | Valid | Fortey & Bruton | Early Ordovician | Kirtonryggen Formation | Norway | A bathyurid proetid, a species of Catochia. |
| Ceraurinus zhuzhaiensis | sp nov | Valid | Lee | Late Ordovician | Xiazhen Formation | China | A cheirurid, a species of Ceraurinus. |
| Chapmanopyge | Nom. nov | Valid | Fortey & Bruton | Ordovician | | Greenland  Norway  United States | A bathyurid proetid; a replacement name for Chapmania Loch (2007). |
| Chattiaspis? budili | Sp. nov | Valid | Corbacho & López-Soriano | Ordovician (early Katian) | Ktaoua Formation | Morocco | A member of Dalmanitidae, possibly a species of Chattiaspis. |
| Chlupaciparia (Australoparia) | Subgen. et 2 sp. nov | Valid | Feist & McNamara | Late Devonian | Virgin Hills Formation | Australia | A member of Proetida, a subgenus of Chlupaciparia. The type species is Chlupaciparia (Australoparia) australis; genus also contains C. (Australoparia) lata. |
| Chlupaciparia (Chlupaciparia) planiops | Sp. nov | Valid | Feist & McNamara | Late Devonian | Virgin Hills Formation | Australia | A member of Proetida, a species of Chlupaciparia. |
| Cirriticeps | Gen. et sp. et comb. nov | Valid | Holloway | Silurian | | Australia | A member of Proetida belonging to the family Tropidocoryphidae. The type species is C. auranticum; genus also includes "Proetus" rattei Etheridge & Mitchell (1891). |
| Dianops algeriensis | Sp. nov | Valid | Crônier et al. | Devonian (Famennian) | ‘Argiles de Marhouma’ Formation | Algeria | A member of Phacopidae. |
| Eurysymphysurina | Gen. et sp. nov | Valid | Fortey & Bruton | Early Ordovician | Kirtonryggen Formation | Norway | A symphysurinid cyclopygoid member of Asaphida. The type species is Eurysymphysurina spora. |
| Gabriellus kierorum | Sp. nov | Valid | Corbacho & López-Soriano | Early Cambrian | Rosella Formation | Canada | A member of Redlichiida belonging to the family Judomiidae, a species of Gabriellus. |
| Gandlops | Gen. et comb. nov | Valid | Bignon & Crônier | Devonian (Emsian) | | France  Morocco  Spain | An asteropygine phacopidan, a new genus for "Kayserops" brevispinosus Gandl (1972). Genus also contains Gandlops ogivalis (Morzadec, 1976), G. palenciae (Smeenk, 1983) and G. tamnrherta (Chatterton et al., 2006). |
| Harlandaspis | Gen. et sp. nov | Valid | Fortey & Bruton | Early Ordovician | Kirtonryggen Formation | Norway | A bathyurid proetid. The type species is Harlandaspis elongata. |
| Heliopyge sohensis | Sp. nov | Valid | Ghobadi Pour in Ghobadi Pour et al. | Devonian (Frasnian) | | Iran | A member of Phacopida belonging to the family Acastidae. |
| Hibbertia aodiensis | sp nov | Valid | Lee | Late Ordovician | Xiazhen Formation | China | A harpetid, a species of Hibbertia. |
| Illaenus (Parillaenus) primoticus | Sp. nov | Valid | Fortey & Bruton | Early Ordovician | Kirtonryggen Formation | Norway | An illaenid corynexochid, a species of Illaenus. |
| Issalia | Gen. et sp. nov | Valid | Elicki & Geyer | Cambrian | | Jordan | An ellipsocephaline ellipsocephalid. The type species is Issalia scutalis. |
| Jaylopygiella debruni | Sp. nov | Valid | Van Viersen | Devonian | Riviere Formation | Belgium | A member of Acastidae. |
| Jeffersonia striagena | Sp. nov | Valid | Fortey & Bruton | Early Ordovician | Kirtonryggen Formation | Norway | A bathyurid proetid, a species of Jeffersonia. |
| Jeffersonia viator | Sp. nov | Valid | Fortey & Bruton | Early Ordovician | Kirtonryggen Formation | Norway | A bathyurid proetid, a species of Jeffersonia. |
| Lachnostoma platypyga | Sp. nov | Valid | Fortey & Bruton | Early Ordovician | Kirtonryggen Formation | Norway | An asaphid, a species of Lachnostoma. |
| Leiostegium spongiosum | Sp. nov | Valid | Fortey & Bruton | Early Ordovician | Kirtonryggen Formation | Norway | A leiostegiid corynexochid, a species of Leiostegium. |
| Linguaphillipsia simekuhensis | Sp. nov | Valid | Hahn, Müller & Aghababalou | Carboniferous (Tournaisian) | Mobarak Formation | Iran | A member of Phillipsiidae, a species of Linguaphillipsia. |
| Meteoraspis qinghaiensis | Sp. nov | Valid | Lin et al. | Cambrian | Liudaogou Group | China | A polymerid trilobite belonging to the family Crepicephalidae, a species of Meteoraspis. |
| Minicryphaeus | Gen. et comb. nov | Valid | Bignon & Crônier | Devonian (Pragian) | | Morocco | An asteropygine phacopidan, a new genus for "Pseudocryphaeus" minimus Morzadec (2001). Genus also contains Minicryphaeus quarterspinosus (Morzadec, 2001) and M. sarirus (Morzadec, 2001) |
| Morzadecops | Gen. et comb. nov | Disputed | Bignon & Crônier | Devonian (middle Pragian to early Emsian) | | Morocco  Spain | An asteropygine phacopidan, a new genus for "Pilletina" zguidensis Morzadec (2001). Genus also contains Morzadecops matutina (Gandl, 1972). The genus Morzadecops was considered to be a junior synonym of the genus Feruminops by Van Viersen & Kloc (2022). |
| Myopsolenites hyperion | Sp. nov | Valid | Elicki & Geyer | Cambrian | | Jordan | A bathynotid, a species of Myopsolenites. |
| Pagetides johannis | Sp. nov | Valid | Fletcher & Greene | Cambrian | Young's Cove Formation | Canada | A species of Pagetides. |
| Palpebralia initialis | Sp. nov | Valid | Feist & McNamara | Late Devonian | Virgin Hills Formation | Australia | A member of Proetida, a species of Palpebralia. |
| Palpebralia pustulata | Sp. nov | Valid | Feist & McNamara | Late Devonian | Virgin Hills Formation | Australia | A member of Proetida, a species of Palpebralia. |
| Palpebralina | Gen. et 3 sp. et comb. nov | Valid | Feist & McNamara | Late Devonian | | Australia  France | A member of Proetida. The type species is Palpebralina pseudopalpebralis; genus also contains new species P. minor and P. ocellifer, as well as "Palpebralia" palpebralis globoculata Feist in Feist and Schindler, 1994 (raised by Feist and McNamara to the rank of a separate species Palpebralina globoculata) and "Palpebralia" latepalpebralis Feist in Feist and Schindler (1994). |
| Paranomocarella dingmaoshanensis | Sp. nov | Valid | Lin et al. | Cambrian | Liudaogou Group | China | A polymerid trilobite belonging to the family Anomocarellidae, a species of Paranomocarella. |
| Parvilichas | Gen. et sp. nov | Valid | Corbacho & Vela | Ordovician (Floian) | Fezouata Formation | Morocco | A member of Lichida belonging to the family Lichidae. The type species is Parvilichas marochii. |
| Peltabellia glabra | Sp. nov | Valid | Fortey & Bruton | Early Ordovician | Kirtonryggen Formation | Norway | A bathyurid proetid, a species of Peltabellia. |
| Pennarbedops | Gen. et comb. nov | Valid | Bignon & Crônier | Devonian (late Emsian) | | France  Spain | An asteropygine phacopidan, a new genus for "Rhenops" babini Morzadec (1983). Genus also contains Pennarbedops circumapodemus (Smeenk, 1983). The genus Pennardbedops was considered to be a junior synonym of the genus Hollardops by Van Viersen & Kloc (2022). |
| Phacops tamtertensis | Sp. nov | Valid | Crônier et al. | Devonian (Famennian) | ‘Argiles de Marhouma’ Formation | Algeria | A member of Phacopidae. |
| Phacops zeregensis | Sp. nov | Valid | Crônier et al. | Devonian (Famennian) | ‘Argiles de Marhouma’ Formation | Algeria | A member of Phacopidae. |
| Phaseolops? bobowensi | Sp. nov | Valid | Fortey & Bruton | Early Ordovician | Kirtonryggen Formation | Norway | A member of Proetidae, possibly a species of Phaseolops. |
| Placosema qinghaiense | Sp. nov | Valid | Lin et al. | Cambrian | Liudaogou Group | China | A polymerid trilobite belonging to the family Catillicephalidae, a species of Placosema. |
| Pliomerina tashanensis | sp nov | Valid | Lee | Late Ordovician | Xiazhen Formation | China | A pliomerid, a species of Pliomerina. |
| Pteroparia extrema | Sp. nov | Valid | Feist & McNamara | Late Devonian | Virgin Hills Formation | Australia | A member of Proetida, a species of Pteroparia. |
| Punka latissima | Sp. nov | Valid | Fortey & Bruton | Early Ordovician | Kirtonryggen Formation | Norway | A bathyurid proetid, a species of Punka. |
| Raymondaspis? pingpong | Sp. nov | Valid | Fortey & Bruton | Early Ordovician | Kirtonryggen Formation | Norway | A styginid corynexochid, possibly a species of Raymondaspis. |
| Remopleurides xiazhenensis | sp nov | Valid | Lee | Late Ordovician | Xiazhen Formation | China | A remopleurid, a species of Remopleurides. |
| Rhenogriffides alborzensis | Sp. nov | Valid | Hahn, Müller & Aghababalou | Carboniferous (Tournaisian) | Mobarak Formation | Iran | A member of Phillipsiidae, a species of Rhenogriffides. |
| Rudybole | Gen. et comb. et sp. nov | Valid | Feist & McNamara | Late Devonian | | Australia  France | A member of Proetida. A new genus for "Drevermannia" brecciae Richter (1913); genus also contains "Drevermannia" adorfensis Richter (1913), "Drevermannia" nodannulata Richter (1913), "Palpebralia" nodannulata concava Feist in Feist and Schindler, 1994 (raised by Feist and McNamara to the rank of a separate species Rudybole concava) and a new species Rudybole depressa. |
| Scopelochasmops mukranensis | Sp. nov | Valid | Krueger | Ordovician | | Germany | A member of the family Pterygometopidae. |
| Scopelochasmops praewrangeli | Sp. nov | Valid | Krueger | Ordovician | | Europe | A member of the family Pterygometopidae. |
| Shabanovia | Nom. nov | Valid | Doweld | Middle Cambrian | | Russia | An alokistocarid; a replacement name for Furia Egorova and Shabanov (1987). |
| Svalbardicurus | Gen. et sp. nov | Valid | Fortey & Bruton | Early Ordovician | Kirtonryggen Formation | Norway | A hystricurid aulacopleurid. The type species is Svalbardicurus delicatus. |
| Tangshanaspis silveri | Sp. nov | Valid | Westrop | Late Cambrian (Furongian) | Signal Mountain Formation | United States | A member of Missisquoiidae, a species of Tangshanaspis. |
| Tayanaspis | Gen. et sp. nov | Valid | Elicki & Geyer | Cambrian | | Jordan | An ellipsocephaline ellipsocephalid. The type species is Tayanaspis bulbosus. |
| Toxochasmops (Toxochasmops) luebzensis | Sp. nov | Valid | Krueger | Ordovician | | Europe | A member of the family Pterygometopidae. |
| Toxochasmops (Toxochasmops) praewesenbergensis | Sp. nov | Valid | Krueger | Ordovician | | Europe | A member of the family Pterygometopidae. |
| Trimerocephalus chopini | Sp nov | Valid | Kin & Błażejowski | Late Devonian (Early Famennian) | | Poland | A phacopid, a species of Trimerocephalus. |
| Uhaymiria | Gen. et sp. nov | Valid | Elicki & Geyer | Cambrian | | Jordan | An ellipsocephaline ellipsocephalid. The type species is Uhaymiria glabra. |
| Uromystrum drepanon | Sp. nov | Valid | Fortey & Bruton | Early Ordovician | Kirtonryggen Formation | Norway | A bathyurid proetid, a species of Uromystrum. |
| Valdariops porkuniensis | Sp. nov | Valid | Krueger | Ordovician | | Europe | A member of the family Pterygometopidae. |
| Valdariops postnybiensis | Sp. nov | Valid | Krueger | Ordovician | | Europe | A member of the family Pterygometopidae. |
| Valdariops ruegensis | Sp. nov | Valid | Krueger | Ordovician | | Europe | A member of the family Pterygometopidae. |
| Valdariops scheffelae | Sp. nov | Valid | Krueger | Ordovician | | Germany | A member of the family Pterygometopidae. |
| Valdariops schneideri | Sp. nov | Valid | Krueger | Ordovician | | Europe | A member of the family Pterygometopidae. |
| Valdariops vierradensis | Sp. nov | Valid | Krueger | Ordovician | | Europe | A member of the family Pterygometopidae. |
| Vietnamia yushanensis | sp nov | Valid | Lee | Late Ordovician | Xiazhen Formation | China | A calymenid, a species of Vietnamia. |
| Zhifangia damghanensis | Sp. nov | Valid | Hahn, Müller & Aghababalou | Carboniferous (Tournaisian) | Mobarak Formation | Iran | A member of Proetidae. Originally described as a species of Zhifangia; subsequently transferred to the genus Pudoproetus by Müller & Hahn (2015). |

## Others

| Name | Novelty | Status | Authors | Age | Unit | Location | Notes |
| Adelophthalmus piussii | Sp. nov | Valid | Lamsdell, Simonetto & Selden | Late Carboniferous | | Italy | A eurypterid, a species of Adelophthalmus. |
| Aglaspella sanduensis | Sp. nov | Valid | Lerosey-Aubril, Ortega-Hernández & Zhu | Cambrian (Furongian) | Sandu Formation | China | A member of Aglaspidida, a species of Aglaspella. |
| Arthroaspis | Gen. et sp. nov | Valid | Stein et al. | Cambrian (Montezuman) | Sirius Passet Lagerstätte | Greenland | An arthropod of uncertain phylogenetic placement, probably a relative of trilobites. The type species is Arthroaspis bergstroemi. |
| Austromarrella | Gen. et sp. | Valid | Haug et al. | Cambrian (Late Templetonian to Early Floran) | Monastery Creek Phosphorite Formation | Australia | A marrellomorph. The type species is Austromarrella klausmuelleri. |
| Dvulikiaspis | Gen. et comb. nov | Valid | Marshall et al. | Early Devonian (Lochkovian) | | Russia | A member of Chasmataspidida, a new genus for "Tylopterella" menneri (initially thought to be a eurypterid). |
| Hesselbonia | Gen. et comb. nov | Valid | Lerosey-Aubril, Ortega-Hernández & Zhu | Late Cambrian | St Lawrence Formation | United States | A member of Aglaspidida, a new genus for "Aglaspella" eatoni. |
| Kachinophilus | Gen. et sp. nov | Valid | Bonato, Edgecombe & Minelli | Late Cretaceous (earliest Cenomanian) | | Myanmar | A geophilomorph centipede found in Burmese amber. The type species is Kachinophilus pereirai. |
| Kasibelinurus yueya | Sp. nov | Valid | Lamsdell, Xue & Selden | Early Devonian (Lochkovian) | Xiaxishancun Formation | China | Originally classified as a kasibelinurid xiphosuran and a species of Kasibelinurus; Selden, Lamsdell & Qi (2015) reinterpreted it as a chelicerate belonging to the lineage that branched from the main euchelicerate lineage prior to the divergence of Eurypterida, Arachnida and Chasmataspidida and made it the type species of a separate genus Houia. |
| Kootenichela | Gen. et sp. nov | Valid | Legg | Middle Cambrian | Stephen Formation | Canada | A member of paraphyletic "Megacheira" closely related to Worthenella. The type species is Kootenichela deppi. Later study considered this species to be chimera. |
| Loricicaris | Gen. et sp. nov | Valid | Legg & Caron | Cambrian | Burgess Shale | Canada | A basal, bivalved arthropod. The type species is Loricicaris spinocaudatus. |
| Nahlyostaspis | Gen. et sp. nov | Valid | Marshall et al. | Early Devonian (Lochkovian) | | Russia | A member of Chasmataspidida. The type species is Nahlyostaspis bergstroemi. |
| Nereocaris briggsi | Sp. nov | Valid | Legg & Caron | Cambrian | Burgess Shale | Canada | A basal, bivalved arthropod; a species of Nereocaris. |
| Norikeya | Gen. et sp. nov | Valid | Tanaka, Siveter & Williams | Early Devonian | | Japan | A bivalved arthropod of uncertain phylogenetic placement. The type species is Norikeya onoi. |
| Palaeomarachne | Gen. et sp. nov | Valid | Rudkin et al. | Late Ordovician | William Lake Konservat-Lagerstätte | Canada | A sea spider. The type species is Palaeomarachne granulata. |
| Paraeurypterus | Gen. et sp. nov | Valid | Lamsdell, Hoşgör & Selden | Upper Ordovician | Şort Tepe Formation | Turkey | A eurypterid. The type species is Paraeurypterus anatoliensis. |
| Parastemmiulus | Gen. et sp. nov | Valid | Riquelme et al. | Miocene | | Mexico | A stemmiulid millipede. The type species is Parastemmiulus elektron. |
| Pentapantopus | Gen. et sp. nov | Valid | Kühl, Poschmann & Rust | Early Devonian | | Germany | A sea spider. The type species is Pentapantopus vogteli. |
| Pentlandopterus | Gen. et comb. nov | Valid | Lamsdell, Hoşgör & Selden | Silurian | | United Kingdom | A eurypterid; a new genus for "Eurypterus" minor Laurie (1899). |
| Sinoleperditia (Sinoleperditia) tongvaiensis | Sp. nov | Valid | Wang | Early Devonian | Khao Loc Formation | Vietnam | A member of Leperditicopida (a group of arthropods of uncertain affinities, classified as ostracods or excluded from this group by different authors), a species of Sinoleperditia. |
| Skrytyaspis | Gen. et sp. nov | Valid | Marshall et al. | Early Devonian (Lochkovian) | | Russia | A member of Chasmataspidida. The type species is Skrytyaspis andersoni. |
| Strobilopterus proteus | Sp. nov | Valid | Lamsdell & Selden | Devonian (Pragian) | Beartooth Butte Formation | United States | A eurypterid, a species of Strobilopterus. |
| Tremaglaspis vanroyi | Sp. nov | Valid | Lerosey-Aubril et al. | Cambrian (Guzhangian) | Weeks Formation | United States | A member of Aglaspidida, a species of Tremaglaspis. |