Genus
Valid Extinct

Clidastes

Cope 1868

Clidastes is an extinct genus of marine lizard belonging to the mosasaur family. It is classified as part of the Mosasaurinae subfamily, alongside genera like Mosasaurus and Prognathodon. Clidastes is known from deposits ranging in age from the Coniacian to the early Campanian in the United States.

Temporal range
Triassic
Jurassic
Cretaceous
Paleogene
Neogene
252 201 145 66 0 Ma
PBDB occurrences
34
Group
Mosasaures
Carnivore aquatic Terrestrial
Clidastes
click to enlarge
Clidastes propython, a mosasaur from the Late Cretaceous of Kansas, digital. © Nobu Tamura (http://spinops.blogspot.com) · CC BY 3.0 · Wikimedia
Clidastes
Clidastes
Clidastes
PBDB Wikipedia
Classification
Mosasauridae Family
Mosasaurinae Subfamily
Clidastes Genus
Measurements
Length
3 m
Fossil sites 34 geolocated sites
Distribution
Top countries
🇺🇸 United States
22
🇸🇪 Sweden
5
🇩🇪 Germany
4
🇲🇽 Mexico
1
🇷🇺 Russia
1
🇯🇴 Jordan
1
Geological formations
Mooreville Chalk
6
Eagle Ford
1
Gober Chalk
1
Lagerdorf
1
Pen
1
Marshalltown
1
Ahlen
1
Temporal distribution
Maastrichtian (72.2–66 Ma)
1
Campanian (83.6–72.2 Ma)
25
Santonian (85.7–83.6 Ma)
3
Coniacian (89.8–85.7 Ma)
3
Turonian (93.9–89.8 Ma)
1
Albian (113.2–100.5 Ma)
1
Species (15)
Clidastes affinis subjective synonym of Clidastes propython 90 Ma
Clidastes cineriarum 90 Ma
Clidastes intermedius 86 Ma
Clidastes liodontus 86 Ma
Clidastes medius subjective synonym of Clidastes propython 90 Ma
Clidastes moorevillensis 86 Ma
Clidastes propython 90 Ma
Clidastes pumilus subjective synonym of Clidastes propython 90 Ma
Clidastes westi subjective synonym of Clidastes propython 90 Ma
Clidastes wymani subjective synonym of Clidastes propython 90 Ma
Edestosaurus dispar subjective synonym of Clidastes propython 90 Ma
Edestosaurus rex subjective synonym of Clidastes propython 90 Ma
Edestosaurus stenops subjective synonym of Clidastes propython 90 Ma
Edestosaurus tortor subjective synonym of Clidastes propython 90 Ma
Edestosaurus velox subjective synonym of Clidastes propython 90 Ma
Synonyms (1)
Edestosaurus subjective synonym of Clidastes
Images 4
Bibliography
Original description
E. D. Cope. 1868. On some Cretaceous Reptilia. Proceedings of the Academy of Natural Sciences of Philadelphia 20:233-242
Bibliography (25)
J. J. Hornung, M. Reich, and U. Frerichs. 2018. A mosasaur fauna (Squamata: Mosasauridae) from the Campanian (Upper Cretaceous) of Hannover, northern Germany. Alcheringa 42(4):543-559 DOI ↗
G. L. Bell Jr., K. R. Barnes, and M. J. Polcyn. 2013. Late Cretaceous mosasauroids (Reptilia, Squamata) of the Big bend region in Texas, USA. Earth and Environmental Science Transactions of the Royal Society of Edinburgh 103:571-581 DOI ↗
N. Bardet. 2012. The mosasaur collections of the Museum National d'Histoire Naturelle of Paris. Bulletin de la Societe Geologique de France 183(1):35-53 DOI ↗
H.-V. Karl, E. Groning, and C. Brauckmann. 2012. New materials of the giant sea turtle Allopleuron (Testudines: Chelonioidea) from the marine Late Cretaceous of Central Europe and the Palaeogene of Kazakhstan. Studia Palaeocheloniologica 4:153-173
H.-V. Karl and C. J. Nyhuis. 2012. Ctenochelys stenoporus (Hay, 1905) (Testudines: Toxochelyidae) and Clidastes sp. (Squamata: Mosasauridae) from the Upper Cretaceous of NW-Germany. Studia Palaeocheloniologica 4:129-142
A. O. Averianov, M. S. Arkhangelsky, and E. M. Pervushov. 2008. A new Late Cretaceous azhdarchid (Pterosauria, Azhdarchidae) from the Volga region. Paleontological Journal 42(6):634-642 DOI ↗
H. F. Kaddumi. 2006. A new genus and species of gigantic marine turtles (Chelonioidea: Cheloniidae) from the Maastrichtian of the Harrana Fauna-Jordan. PalArch Vertebrate Paleontology 2(1):1-14
C. Diedrich and E. W. A. Mulder. 2004. A new record of Clidastes (Squamata, Mosasauridae) from the Upper Campanian of the Munster Basin (NW Germany). Netherlands Journal of Geosciences - Geologie en Mijnbouw 83(1):73-78 DOI ↗
J. Lindgren and M. Siverson. 2004. The first record of the mosasaur Clidastes from Europe and its palaeogeographical implications. Acta Palaeontologica Polonica 49(2):219-234
D. Eberth, S. D. Sampson, and R. A. Rodriguez-De La Rosa, M. Aguillon-Martinez, D. B. Brinkman, J. Lopez-Espinoza. 2003. Las Aguilas: an unusually rich Campanian-age vertebrate locale in southern Coahuila, Mexico. Journal of Vertebrate Paleontology 23(3):47A
M. J. Everhart. 2001. Revisions to the biostratigraphy of the Moasasauridae (Squamata) in the Smoky Hill Chalk Member of the Niobara Chalk (Late Cretaceous) of Kansas. Transactions of the Kansas Academy of Science 104(1-2):59-78 DOI ↗
G. L. Bell. 1997. A phylogenetic revision of North American and Adriatic Mosasauroidea. Ancient marine reptiles DOI ↗
K. R. Wright. 1988. The first record of Clidastes liodontus (Squamata, Mosasauridae) from the eastern United States. Journal of Vertebrate Paleontology 8(3):343-345 DOI ↗
J. E. Martin and P. R. Bjork. 1987. Gastric residues associated with a mosasaur from the Late Cretaceous (Campanian) Pierre Shale in South Dakota. Dakoterra 3:68-72
E. M. Lauginiger. 1984. An Upper Campanian vertebrate fauna from the Chesapeake and Delaware Canal, Delaware. The Mosasaur 2:141-149
D. A. Russell. 1970. The vertebrate fauna of the Selma Formation of Alabamam: Part VII The Mosasaurs. Fieldiana: Geology Memoirs 3(7):365-380 DOI ↗
J. T. Thurmond. 1969. Notes on mosasaurs from Texas. The Texas Journal of Science 21(1):69-80
D. A. Russell. 1964. The Skull of American Mosasaurs.
W. Sevon. 1957. A Niobrara mosasaur from South Dakota. Proceedings of the South Dakota Academy of Science 36:144-146
C. H. Sternberg. 1915. Evidence proving that the Belly River beds of Alberta are equivalent with the Judith River beds of Montana. Science 42(1073):131-133 DOI ↗
R. T. Hill. 1901. Geography and geology of the Black and Grand Prairies, Texas. Twenty-First Annual Report of the United States Geological Survey. Part VII—Texas
W. T. Lee. 1897. Geological News. American Naturalist 31(367):613-614
E. D. Cope. 1870. On some species of Pythonomorpha from the Cretaceous beds of Kansas and New Mexico. Proceedings of the American Philosophical Society 11(81):574-584
J. Leidy. 1870. [Remarks on Poikilopleuron valens, Clidastes intermedius, Macrosaurus proriger, Baptemys wyomingensis, and Emys stevensonianus]. Proceedings of the Academy of Natural Sciences of Philadelphia 22(1):3-5
E. D. Cope. 1869. On the reptilian orders Pythonomorpha and Streptosauria. Proceedings of the Boston Society of Natural History 12:250-266