This list of the prehistoric life of Arizona contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Arizona.
Precambrian The Paleobiology Database records no known occurrences of Precambrian fossils in Arizona.
Paleozoic
Selected Paleozoic taxa of Arizona †Achistrum †Aglaocrinus †Altudoceras †Alula †Amphiscapha †Annularia †Annularia asteris †Annularia mucronata †Annularia stellata †Anomphalus †Aphyllopteris †Arastra – type locality for genus †Archaeocidaris †Archimedes †Archimedes intermedius †Archimedes invaginatus †Archimedes lativolvis †Archimedes proutanus †Archimedes terebriformis †Arizonerpeton – type locality for genus †Athyris †Aulopora †Aviculopecten †Aviculopecten bellatulus – type locality for species †Aviculopecten girtyi – or unidentified comparable form †Aviculopecten kaibabensis – type locality for species †Bellerophon †Brachyphyllum †Calamites †Calamites cisti †Callipteris †Callipteris conferta †Camarotoechia †Camarotoechia metallica †Camarotoechia mutata †Caninia – tentative report †Chonetes †Chonetes oklahomensis †Cleiothyridina †Cleiothyridina orbicularis †Composita †Composita humilis †Composita laevis †Composita mexicana †Composita ovata †Composita ozarkana †Composita subtilita †Composita trinuclea †Cooksonia – or unidentified comparable form †Cordaites †Cordaites principalis †Cycloceras †Cyclopteris †Cymatochiton – tentative report †Cyrtospirifer †Cyrtospirifer whitneyi †Cystodictya †Echinaria †Edmondia †Elfridia – type locality for genus †Elrathia Eocaudina †Euomphalus †Euomphalus utahensis †Fenestella †Fusulina †Glikmanius †Glikmanius occidentalis †Globular †Gnathorhiza – or unidentified comparable form †Hastimima – tentative report †Hedeia †Hexagonaria †Hyolithes †Icriodus †Idiognathodus †Kaibabvenator – type locality for genus †Kaibabvenator swiftae – type locality for species †Kootenia †Lepidodendron †Lepidodendron aculeatum †Lepidostrobus †Lingula †Lingulella †Liroceras †Metacoceras †Michelina †Modiolus †Murchisonia †Naticopsis †Naticopsis kaibabensis – type locality for species †Naticopsis waterlooensis †Neospirifer – tentative report †Neospirifer dunbari †Neuropteris †Neuropteris heterophylla †Neuropteris scheuchzeri †Nisusia Nucula †Olenellus †Ophiderpeton †Orodus †Orthacanthus †Pachyphyllum †Pagiophyllum †Paladin †Palmatolepis †Palmatolepis triangularis †Paterina †Pecopteris †Pentremites †Petalodus †Phillipsia †Phlegethontia †Pinna †Platyceras †Polygnathus †Prodentalium †Ptyonius – tentative report †Rugosa †Sallya – tentative report †Scoyenia Serpula Solemya †Solenomorpha – report made of unidentified related form or using admittedly obsolete nomenclature †Spathognathodus †Sphenophyllum †Sphenophyllum gilmorei – type locality for species †Sphenophyllum oblongifolium †Sphenopteris †Spirifer †Spirifer centronatus †Spiriferina †Stigmaria †Stroboceras †Syringopora †Tainoceras †Triodus †Venustodus †Vidria †Walchia †Wardia †Wilkingia †Worthenia †Yarravia Yoldia
Mesozoic
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