Dinosaurs and other fossils found in Colorado
The Paleobiology Database records 4,983 fossil occurrences of 701 genera in Colorado, United States, including 56 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 Colorado?
The Paleobiology Database records 56 dinosaur genera from Colorado. Those with the most fossil records there are Allosaurus, Camarasaurus, Stegosaurus, Apatosaurus, Diplodocus, Brachiosaurus.
Dinosaurs found in Colorado (56 genera)
Allosaurus, Camarasaurus, Stegosaurus, Apatosaurus, Diplodocus, Brachiosaurus, Tyrannosaurus, Ceratosaurus, Triceratops, Ornithomimus, Tetrapodosaurus, Brontosaurus, Supersaurus, Albertosaurus, Edmontosaurus, Barosaurus, Dromaeosaurus, Anomoepus, Eubrontes, Parabrontopodus, Edmontonia, Torvosaurus, Pachycephalosaurus, Centrosaurus, Smitanosaurus, Coelophysis, Pentaceratops, Torosaurus and 28 more genera without a page here: Amphicoelias, Anchisauripus, Camptosaurus, Caririchnium, Ceratopsipes, Coelurus, Dinehichnus, Dryosaurus, Eosauropus, Galeamopus, Grallator, Hadrosauropodus, Haplocanthosaurus, Magnoavipes, Maraapunisaurus, Marshosaurus, Mymoorapelta, Ornitholestes, Ornithomimipus, Ostendichnus, Otozoum, Paronychodon, Pseudotetrasauropus, Richardoestesia, Saurexallopus, Stokesosaurus, Theiophytalia, Therangospodus.
Prehistoric birds (50 genera)
Buteo, Corvus, Bubo, Anas, Lagopus, Aythya, Aquila, Phalacrocorax, Larus, Numenius, Fulica, Asio, Podiceps, Porzana, Centrocercus, Agelaius, Junco, Podilymbus, Falcipennis, Bathornis, Ogygoptynx, Eocuculus, Phasmagyps · 27 more genera recorded.
Pterosaurs (3 genera)
Pteraichnus, Kepodactylus, Mesadactylus.
Plesiosaurs & kin (2 genera)
Brachauchenius, Thalassomedon.
Mosasaurs (5 genera)
Mosasaurus, Prognathodon, Tylosaurus · 2 more genera recorded.
Crocodile relatives (19 genera)
19 more genera recorded.
Early tetrapods & amphibians (11 genera)
Trihecaton, Platyhystrix, Conjunctio, Eryops · 7 more genera recorded.
Pre-mammals (synapsids) (5 genera)
Ianthasaurus · 4 more genera recorded.
Early mammals (1 genera)
1 more genera recorded.
Ice Age & later mammals (431 genera)
Hyopsodus, Hyracotherium, Phenacodus, Coryphodon, Cantius, Periptychus, Paramys, Didymictis, Microsyops, Geomys, Diacodexis, Heptodon, Viverravus, Lambdotherium, Miacis, Meniscotherium, Ectocion, Ectoconus, Ectoganus, Copecion, Equus, Oxyaena, Leptomeryx, Barylambda, Chriacus, Palaeolagus, Vulpes, Macrocranion, Ischyromys, Spermophilus, Megacerops, Titanoides, Sifrhippus, Palaeosyops, Prolimnocyon, Ectypodus, Marmota, Mustela, Sylvilagus, Merychippus, Urocitellus, Trigonias, Pachyaena, Herpetotherium, Probathyopsis, Lepus, Cynomys, Plesiadapis, Hesperocyon, Taeniolabis, Homogalax, Peradectes, Lambertocyon, Didelphodus, Mesohippus, Thomomys, Archaeotherium, Phenacomys, Hyracodon, Eotitanops, Trogosus, Aphelops, Mesodma, Meniscoessus, Palaeonictis, Merycochoerus, Pelycodus, Chiromyoides, Hypisodus, Hyaenodon, Camelops, Reithrodontomys, Parahippus, Neogale, Ptilodus, Merycoidodon, Vulpavus, Eutamias, Uintacyon, Eucosmodon, Merycodus, Proscalops, Parectypodus, Bison, Ovis, Sciurus, Sorex, Odocoileus, Amphicyon, Pliohippus, Mesonyx, Miohippus, Hyrachyus, Hypohippus, Poebrotherium, Subhyracodon, Tritemnodon, Stylinodon, Brachycrus, Tomarctus, Daphoenus, Palaeosinopa, Brachylagus, Cimolomys, Cormohipparion, Peraceras, Protolabis, Ignacius, Mimoperadectes, Aletodon, Helaletes, Mesogaulus, Metarhinus, Cimexomys, Microtomarctus, Oxyclaenus, Ustatochoerus, Tamiasciurus, Sigmodon, Eohippus, Dinictis, Callospermophilus, Patriofelis, Notharctus, Platygonus, Megahippus, Orohippus, Paramylodon, Aelurodon, Antilocapra, Erethizon, Cimolodon, Bathyopsis, Dissacus, Cormocyon, Eoconodon, Gypsonictops, Carpocyon, Leptauchenia, Peratherium, Smilodectes, Hypertragulus, Merychyus, Oodectes, Calippus, Pseudoprotoceras, Carpodaptes, Glirodon, Neoliotomus, Leptalestes, Notoparamys, Paracosoryx, Mammuthus, Cervus, Mammut, Lontra, Dipodomys, Gomphotherium, Chaetodipus, Lasiopodomys, Moropus, Fruitafossor, Oreamnos, Otospermophilus, Liomys, Borophagus, Epicyon, Menoceras, Anchitherium, Arctocyon, Pseudaelurus, Sinonyx, Teilhardina, Dinohippus, Epihippus, Leptocyon, Psittacotherium, Amphimachairodus, Metacheiromys, Diceratherium, Eobasileus, Protungulatum, Protorohippus, Hapalodectes, Phlaocyon, Cynelos, Hemiauchenia, Megalictis, Amphechinus, Catopsalis, Hypolagus, Megatylopus, Protohippus, Amblotherium, Aztlanolagus, Cynarctoides, Mesocyon, Mylagaulus, Palaeogale, Sespia, Cynarctus, Haplolambda, Mesatirhinus, Militocodon, Priacodon, Alforjas, Brachyrhynchocyon, Kimbetohia, Mimomys, Omomys, Paratylopus, Poabromylus, Pseudhipparion, Ramoceros, Bathygenys, Brachypsalis, Heptacodon, Matthewlabis, Paracynarctus, Protomarctus, Triplopus, Agnotocastor, Copelemur, Drassonax, Euroxenomys, Michenia, Miniochoerus, Navajovius, Perchoerus, Plesippus, Protalphadon, Protoreodon, Ticholeptus, Monosaulax, Xyronomys, Hemiacodon, Paressonodon, Parikimys · 193 more genera recorded.
Ancient fish & sharks (39 genera)
Archaeolamna, Johnlongia, Cooleyella · 36 more genera recorded.
Ammonites & nautiloids (70 genera)
Baculites, Orthoceras · 68 more genera recorded.
Trilobites & sea scorpions (5 genera)
5 more genera recorded.
Ediacaran & Cambrian life (4 genera)
4 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).