page_title: List of the Paleozoic life of Oklahoma
section_title: D
hierarchical_section_title: List of the Paleozoic life of Oklahoma / D
caption_attribution_description: English: Picture of a fossil trilobite of the species Dalmanites limulurus. From Silurian age strata of New York (USA).
context_page_description: This list of the Paleozoic life of Oklahoma contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Oklahoma and are between 541 and 252.17 million years of age.
context_section_description: †Dactylogonia
  †Dactylogonia sculpturata
  †Dactylogonia subaequicostellata
  †Dalejina
  †Dalejina henryhousensis
  †Dalejina subtriangularis
  †Dalmanella
  †Dalmanella edgewoodensis
   †Dalmanites
  †Dalmanites ptyktorhion
  †Dalmanites rutellum
  †Dapsilodus
  †Dapsilodus obliquicostatus
  †Dapsilodus praecipuus
  †Dapsilodus sparsus
  †Decoriconus
  †Decoriconus fragilis
  †Decoroproetus
  †Decoroproetus anaglyptus
  †Decoroproetus corycoeus
  †Dekayella
  †Dekayella praenuntia
  †Delocrinus
  †Delocrinus densus
  †Delocrinus hemisphericus
  †Delocrinus pentanodus – type locality for species
  †Deloia
  †Deloia sulcata
  †Delopsocus
  †Delopsocus elongatus
  †Delopterum
  †Delopterum latum
  †Delopterum minutum
    †Delorhynchus – type locality for genus
  †Delorhynchus cifellii – type locality for species
  †Delorhynchus priscus – type locality for species
  †Delotaxis
  †Delthyris
  †Delthyris kozlowskii
  †Deltoidospora
  †Deltoidospora adnata
  †Deltoidospora grandis
  †Deltoidospora levis
  †Deltoidospora priddyi
  †Deltoidospora sphaerotriangula
  †Deltoidospora subadnatoides
  †Dendrocrinus
  †Dendrocrinus latibranchiatus – or unidentified comparable form
  †Dendrocrinus rusticus
  †Densosporites
  †Densosporites sphaerotriangularis
  †Derbyia
  †Derbyia crassa – or unidentified comparable form
  †Derbyoides – or unidentified related form
  †Desmoinesia
  †Desmoinesia muricatina
  †Desmorthis
  †Diabolocrinus
  †Diacalymene
  †Diacalymene clavicula
     †Diadectes
  †Diadectes zenos
  †Dianulites
  †Dianulites fastigiatus
  †Dianulites petropolitana
  †Diaphoroceras
  †Diaphorodendron
  †Diaphorodendron dicentricum
  †Diaphorodendron scleroticum
  †Diaphragmus
  †Diaphragmus fasciculatus
  †Dibunophyllum
  †Dibunophyllum hansoni – type locality for species
  †Dicamaropsis
  †Dicamaropsis parva
  †Dicellograptus
  †Dicellograptus gurleyi
  †Dicellograptus mensurans
  †Diceromyonia
  †Diceromyonia tersa – or unidentified comparable form
  †Dichentomum
  †Dichentomum tinctum
  †Dichognathus
  †Dichognathus extensa
  †Dichognathus typica
  †Dicoelosia
  †Dicoelosia oklahomenesis – type locality for species
  †Dicoelosia oklahomensis
  †Dicoelosia varica
  †Dicranella
  †Dicranella fragilis
  †Dicranella macrocarinata
    †Dicranurus
  †Dicranurus elegantus
  †Dicranurus hamatus
  †Dicromyocrinus
  †Dicromyocrinus medius – type locality for species
  †Dicromyocrinus optimus
  †Dicromyocrinus subaplatus – type locality for species
  †Dictybolos – type locality for genus
  †Dictybolos tener – type locality for species
  †Dictyoclostus
  †Dictyoclostus ingrata – or unidentified related form
  †Dictyoclostus mesialis
  †Dictyonella
  †Dictyonella gibbosa
  †Dictyonema
  †Dictyonema francesiae
  †Dictyonema rockcrossingensis
  †Dictyospongia
  †Dielasma
  †Dielasma oklahomensis – type locality for species
  †Dierespongia – type locality for genus
  †Dierespongia palla – type locality for species
  †Dimeropygiella
    †Dimetrodon
  †Dimetrodon dollovianus
  †Dimetrodon limbatus – or unidentified comparable form
  †Dimetrodon loomisi
  †Dimetrodon macrospondylus
  †Diphuicrinus
  †Diphuicrinus croneisi
  †Diphuicrinus dovelyensis
  †Diphuicrinus faustus – type locality for species
  †Diphuicrinus mammifer – type locality for species
  †Diphuicrinus pentanodus – type locality for species
   †Diplocaulus – type locality for genus
  †Diplocaulus magnicornis
  †Diplocaulus parvus – type locality for species
  †Diplocaulus primus – type locality for species
  †Diplograptus
  †Diplograptus maxwelli
  †Diplothmema
  †Diplothmema pachyderma
  †Diplotrypa
  †Diplotrypa bassleri
  †Discitoceras
  †Disparifusa
  †Disparifusa hystricosa
  †Distacodus
  †Distacodus oklahomensis – type locality for species
  †Ditaxineura
  †Ditaxineura cellulosa
  †Ditoecholasma
  †Ditomopyge
  †Ditomopyge parvulus – or unidentified comparable form
  †Dizygopleura
  †Doleotheca
  †Doleroides
  †Doleroides compressus
  †Doleroides oklahomensis
  †Doleroides vescus
  †Dolerophyllum – tentative report
  †Dolerorthis
  †Dolerorthis hami
  †Dolerorthis nanella
  †Dolerorthis savagei
  †Doleserpeton – type locality for genus
  †Doleserpeton annectens – type locality for species
  †Dolichoharpes
  †Dolichoharpes reticulata
  †Doliocrinus
  †Domatoceras
  †Domatoceras collinsvillense – type locality for species
  †Domatoceras williamsi
  †Donaldina
  †Donaldina attenuata
  †Donaldina g
caption: Fossil of the Late Ordovician-Middle Devonian trilobite Dalmanites
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