†family Elasmosauridae Cope 1869 (elasmosaur)

Reptilia - Sauropterygia - Elasmosauridae

Synonyms: Cimoliasauridae Delair 1959, Cimoliosauridae Delair 1959

Parent taxon: Xenopsaria according to R. B. J. Benson and P. S. Druckenmiller 2014

See also Andrews 1910, Antunes 1964, Brown 1981, Cabrera 1941, Carpenter 1999, Carroll 1988, Cope 1871, Cope 1875, Delair 1960, Druckenmiller and Russell 2006, Gasparini et al. 2003, Gasparini et al. 2001, Gasparini and Spaletti 1993, Ketchum and Benson 2010, Ketchum and Benson 2011, Kuhn 1946, Kuhn 1966, Nicholls and Meckert 2002, O'Keefe 2001, O'Keefe 2004, O'Keefe and Street 2009, Otero et al. 2014, Persson 1963, Sato 2003, Schumacher and Everhart 2005, Seeley 1892, Serratos et al. 2017, Thurmond and Jones 1981, Wegner 1914, Welles 1943, Welles 1949, Welles 1962 and White 1940

Sister taxon: Leptocleidia

Subtaxa: Alexeyisaurus Alzadasaurinae Alzadasaurus kansasensis Alzadasaurus tropicus Aristonectinae Brimosaurus Callawayasaurus Callowayosaurus Cardiocorax Cimoliasaurus Cimoliasaurus andium Cimoliasaurus cantabrigiensis Cimoliasaurus caudalis Elasmosaurinae Elasmosaurus amalitskii Elasmosaurus kurskensis Elasmosaurus orskensis Elasmosaurus serdobensis Elasmosaurus sternbergi Eromangasaurus Gronausaurus Hydrotherosaurus Kawanectes Leurospondylus Libonectes Mauisaurus Mauisaurus gardneri Morturneria Plesiosaurus constrictus Plesiosaurus crassicostatus Plesiosaurus gulo Plesiosaurus gurgitis Plesiosaurus helmersenii Plesiosaurus holmesii Plesiosaurus hoodii Plesiosaurus mackayii Plesiosaurus mauritanicus Plesiosaurus sutherlandi Pliosaurus gigas Pliosaurus macrospondylus Scanisaurus Stereosaurus Styxosaurinae Thalassiosaurus Thalassiosaurus ischiadicus Thalassomedon Thalassonomosaurus Thalassonomosaurus nobilis Tuarangisaurus Vegasaurus Wapuskanectes Woolungasaurus Woolungasaurus glendowerensis Zarafasaura

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Type: Elasmosaurus

Ecology: aquatic carnivore

Distribution:

• Cretaceous to Paleogene of New Zealand (1 collection), United States (1: New Jersey)

• Cretaceous of Angola (2), Antarctica (10), Argentina (21), Australia (6), Belgium (3), Bulgaria (1), Canada (20: Alberta, British Columbia, Northwest Territories, Nunavut, Saskatchewan, Yukon), Chile (8), Colombia (2), the Czech Republic (2), Egypt (1), Germany (1), Japan (9), Jordan (1), Morocco (5), the Netherlands (5), New Zealand (11), the Russian Federation (4), Saudi Arabia (1), Spain (3), Sweden (4), Syria (8), the United Kingdom (5), United States (41: Arkansas, California, Colorado, Kansas, Maryland, Montana, Nebraska, New Jersey, New Mexico, South Dakota, Texas, Wyoming), Venezuela (1)

• Jurassic to Cretaceous of France (1), the United Kingdom (1)

• Jurassic of France (1), Germany (1), Mexico (3), the United Kingdom (2)

• Triassic of the Russian Federation (1)

Total: 187 collections including 203 occurrences

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