page_title: List of the Paleozoic life of Arkansas
section_title: D
hierarchical_section_title: List of the Paleozoic life of Arkansas / D
caption_attribution_description: Fòssil de trilobit conegut com Diacalymene ouzregui o també Colpocoryphe (identificació facilitada per Sam Gon III). Motllo i contramotllo. L'exemplar prové de Casablanca, el Marroc. Imatge cedida per Ingrid C. Peiró
context_page_description: This list of the Paleozoic life of Arkansas contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Arkansas and are between 541 and 252.17 million years of age.
context_section_description: †Dalmanites – type locality for genus
  †Dalmanites bassleri
  †Dalmanites howelli
  †Dalmanites ptyktorhion – type locality for species
  †Decoroproetus
  †Decoroproetus anaglyptus – type locality for species
  †Decoroproetus corycoeus
   †Deiphon
  †Deiphon longifrons
  †Dellea
  †Dellea suada
  †Delops
  †Densosporites
  †Densosporites annulatus
  †Densosporites irregularis
  †Densosporites sphaerotriangularis
  †Densosporites triangularis
  †Dentoceras
  †Dentoceras belemnitiforme – type locality for species
  †Desmoinesia
  †Diaboloceras
  †Diaboloceras neumeieri – type locality for species
  †Diaboloceras varicostatum
   †Diacalymene
  †Diacalymene altirostris
  †Diacamaropsis
  †Diacamaropsis parva
  †Diaphragmus
  †Dicamaropsis
  †Dicamaropsis parva
  †Dicoelosia
  †Dicoelosia bilobella
  †Dielasma
  †Dinocycloceras
  †Dinocycloceras ballianum – or unidentified comparable form
  †Dinocycloceras prolixum
  †Diphuicrinus
  †Diphuicrinus croneisi
  †Dolerorthis – tentative report
  †Dolerorthis nanella
  †Dolorthoceras
  †Dolorthoceras caneyanum – or unidentified comparable form
  †Dolorthoceras incisum – type locality for species
  †Dolorthoceras tenuifilosum – type locality for species
caption: Fossil and mold of the Late Ordovician-Silurian trilobite Diacalymene
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