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Class:
Reptilia
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Filter by
Phylum
Chordata (865)
Order
(7)
(33)
(11)
(13)
Crocodylia (45)
Ornithischia (33)
Phytosauria (8)
Plesiosauria (8)
Pterosauria (4)
Saurischia (26)
Squamata (388)
Testudines (251)
and 5 more
Family
(2)
(4)
(23)
Alligatoridae (5)
Allosauridae (1)
Anguidae (7)
Ankylosauridae (4)
Atoposauridae (33)
Bernissartiidae (11)
Caenagnathidae (1)
Camarasauridae (3)
Ceratopsidae (3)
Colubridae (97)
Compsognathidae (1)
Crocodylidae (3)
Dolichosauridae (12)
Emydidae (1)
Goniopholididae (4)
Hadrosauridae (12)
Hypsilophodontidae (1)
Iguanodontidae (2)
Mosasauridae (25)
Nodosauridae (9)
Ornithomimidae (5)
Pachycephalosauridae (1)
Parasuchidae (7)
Pholidosauridae (9)
Phrynosomatidae (7)
Pliosauridae (1)
Polycotylidae (2)
Protostegidae (1)
Scincidae (14)
Teiidae (3)
Teleosauridae (7)
Testudinidae (5)
Trionychidae (1)
Tyrannosauridae (9)
Viperidae (1)
and 31 more
Genus
Alligator (5)
Allosaurus (1)
Amblydactylus (1)
Bernissartia (11)
Camarasaurus (3)
Chasmosaurus (1)
Chelosphargis (1)
Chirostenotes (1)
Clidastes (6)
Cnemidophorus (3)
Coluber (4)
Coniasaurus (12)
Corythosaurus (2)
Crotalus (1)
Daspletosaurus (1)
Deinosuchus (23)
Diadophis (15)
Eumeces (1)
Euoplocephalus (1)
Geochelone (1)
Goniopholis (4)
Hesperotestudo (1)
Heterodon (5)
Lampropeltis (2)
Machimosaurus (7)
Niobrarasaurus (1)
Ophisaurus (7)
Ornitholestes (1)
Pantherophis (1)
Phrynosoma (3)
Platecarpus (4)
Plesioplatecarpus (1)
Plestiodon (12)
Pteranodon (4)
Silvisaurus (1)
Storeria (5)
Stylemys (2)
Thamnophis (7)
Theriosuchus (30)
Toxochelys (2)
Triceratops (2)
Trinacromerum (1)
Trionyx (1)
Tylosaurus (7)
and 37 more
Individual/Organization
Sternberg, G.F. (49)
Walker, M.V. (22)
Sternberg, L. (8)
Vague, J. (3)
McCoy, S. (1)
Harksen, J.C. (1)
Miller, H.W. (2)
and 100 more
Period
Cretaceous (210)
Jurassic (9)
Neogene (418)
Paleogene (142)
Quaternary (61)
Triassic (8)
Epoch
Eocene (106)
Holocene (2)
Late (5)
Lower (100)
Miocene (278)
Oligocene (28)
Paleocene (4)
Pleistocene (51)
Pliocene (139)
Upper (76)
and 3 more
Age
Albian (4)
Aptian (56)
Calabrian (14)
Campanian (14)
Cenomanian (1)
Coniacian (1)
Lutetian (1)
Maastrichtian (16)
Middle (26)
Middle Cenomanian (2)
Priabonian (1)
Rupelian (10)
Santonian (14)
Turonian (17)
and 7 more
Formation
Ballard (6)
Belly River (17)
Bridger (4)
Brule (1)
Carlile (9)
Carlile Shale (1)
Carlile/Greenhorn (2)
Cedar Mountain (96)
Chadron (1)
Chinle (1)
Crooked Creek (20)
Dakota (4)
Denver (3)
Dinosaur Park (16)
Evanston (2)
Fowkes (3)
Fox Hills (1)
Gething (1)
Graneros (3)
Green River (97)
Greenhorn (9)
Horsetail Creek (1)
Kingsdown (1)
Kiowa (1)
Kiowa Shale (4)
Lance (3)
Mesaverde (1)
Morrison (7)
Niobrara (29)
Niobrara Chalk (1)
Ogallala (265)
Pierre Shale (1)
Rexroad (117)
Tongue River (1)
Uinta (1)
White River (4)
and 29 more
Member
Atwater (14)
Blue Hill Shale (2)
Brushy Basin (1)
Codell (2)
Fairport (2)
Fairport/Pfeifer (1)
Hartland (3)
Jetmore Chalk (2)
Juana Lopez (4)
Lincoln (4)
Missler (6)
Myton (1)
Ogallala (1)
Shinarump (1)
Smoky Hill (26)
Smoky Hill Chalk Member (1)
Twin Buttes (3)
Unit II (1)
Unit IV (2)
V (1)
and 13 more
Country
Canada (34)
United States of America (819)
State/Province
Alberta (33)
Arizona (2)
British Columbia (1)
Colorado (13)
Kansas (504)
Montana (1)
Nebraska (24)
New Mexico (8)
South Dakota (2)
Utah (227)
Wyoming (36)
and 4 more
County
Apache (1)
Arapahoe (3)
Baca (1)
Clark (28)
Converse (17)
Dawes (11)
Delta (1)
Ellis (38)
Emery (101)
Frontage Road (2)
Gove (9)
Graham (200)
Harding (1)
Jewell (3)
Lane (2)
Lincoln (4)
Lincoln (3)
Logan (9)
McPherson (6)
Meade (134)
Mitchell (1)
Morton (1)
Niobrara (1)
Otero (7)
Phillips (4)
Powder River (1)
Republic (2)
Rice (1)
Rooks (1)
Russell (7)
Sanpete (1)
Santa Cruz (1)
Santa Fe (6)
Scott (2)
Seward (22)
Sheridan (1)
Sioux (13)
Smith (13)
Summit (20)
Trego (5)
Uinta (5)
Uintah (104)
Wallace (5)
Washington (2)
Washington (1)
Weld (1)
and 39 more