Dinosaurs and other fossils found in Arizona
The Paleobiology Database records 2,720 fossil occurrences of 393 genera in Arizona, United States, including 23 dinosaur genera. Every fossil site is shown on the map; colours show the main group found there. States are as recorded by the Paleobiology Database for each fossil collection.
Dots are fossil collections in the Paleobiology Database on today’s map, merged where closer than about 5 km. See them on the ancient Earth →
What dinosaurs have been found in Arizona?
The Paleobiology Database records 23 dinosaur genera from Arizona. Those with the most fossil records there are Dilophosaurus, Eubrontes, Crittendenceratops, Tenontosaurus, Apatosaurus, Acrocanthosaurus.
Dinosaurs found in Arizona (23 genera)
Dilophosaurus, Eubrontes, Crittendenceratops, Tenontosaurus, Apatosaurus, Acrocanthosaurus, Anomoepus, Coelophysis and 15 more genera without a page here: Anchisauripus, Barrancapus, Camposaurus, Dilophosauripus, Eosauropus, Grallator, Kayentapus, Kayentavenator, Megalosauripus, Navahopus, Sarahsaurus, Scutellosaurus, Segisaurus, Sonorasaurus, Syntarsus.
Prehistoric birds (22 genera)
Corvus, Aquila, Turdus, Branta, Otus, Asio, Gallinula, Dendrocygna, Junco, Cyrtonyx, Amplibuteo · 11 more genera recorded.
Pterosaurs (3 genera)
Pteraichnus, Rhamphinion, Eotephradactylus.
Crocodile relatives (36 genera)
Postosuchus, Poposaurus, Arizonasaurus · 33 more genera recorded.
Early tetrapods & amphibians (14 genera)
Apachesaurus, Eocyclotosaurus, Wellesaurus, Vigilius, Stanocephalosaurus, Quasicyclotosaurus, Phlegethontia, Arizonerpeton, Ptyonius, Hadrokkosaurus, Cosgriffius · 3 more genera recorded.
Pre-mammals (synapsids) (8 genera)
8 more genera recorded.
Early mammals (2 genera)
Morganucodon · 1 more genera recorded.
Ice Age & later mammals (145 genera)
Equus, Sigmodon, Sylvilagus, Ovis, Camelops, Dipodomys, Baiomys, Spermophilus, Thomomys, Otospermophilus, Platygonus, Protolabis, Myotis, Hemiauchenia, Lepus, Cratogeomys, Perognathus, Mammuthus, Odocoileus, Borophagus, Glyptotherium, Hypolagus, Reithrodontomys, Geomys, Notiosorex, Epicyon, Stegomastodon, Stockoceros, Megalonyx, Chasmaporthetes, Plesippus, Castor, Vulpes, Mammut, Sorex, Eptesicus, Rhynchotherium, Capromeryx, Plesiogulo, Alforjas, Metalopex, Paronychomys, Bison, Marmota, Ammospermophilus, Machairodus, Tadarida, Eumops, Cuvieronius, Dinohippus, Paramylodon, Diceratherium, Adelphailurus, Megatylopus, Aztlanolagus, Nothrotherium, Merychyus, Alilepus, Repomys, Mustela, Sciurus, Cervus, Procyon, Puma, Homotherium, Arctodus, Desmodus, Corynorhinus, Neogale, Pseudaelurus, Titanotylopus, Glossotherium, Indarctos, Amphimachairodus, Stenomylus, Neochoerus, Paramachaerodus, Chrysocyon, Erethizon, Euceratherium, Nothrotheriops, Plionarctos, Brachylagus, Carpocyon, Tetrameryx, Mimomys, Aenocyon, Dipoides, Paenemarmota, Trigonictis · 55 more genera recorded.
Ancient fish & sharks (46 genera)
46 more genera recorded.
Ammonites & nautiloids (59 genera)
Baculites · 58 more genera recorded.
Trilobites & sea scorpions (9 genera)
9 more genera recorded.
Ediacaran & Cambrian life (25 genera)
Elrathia, Olenellus · 23 more genera recorded.
Giant insects & arthropods (1 genera)
1 more genera recorded.
Fossil occurrences: Paleobiology Database (CC0 as reported by the API; CC BY 4.0 policy), downloaded 23 October 2026. Genus pages quote Wikipedia (CC BY-SA 4.0).