†unranked clade Leptocleidia Ketchum and Benson 2010 (plesiosaur)

Reptilia - Sauropterygia

Synonym: Leptocleidoidea Druckenmiller and Russell 2008 [replaced name]

Full reference: H. F. Ketchum and R. B. J. Benson. 2010. Global interrelationships of Plesiosauria (Reptilia, Sauropterygia) and the pivotal role of taxon sampling in determining the outcome of phylogenetic analyses. Biological Reviews 85:361-392

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

See also Ketchum and Benson 2010 and Ketchum and Benson 2011

Sister taxon: Elasmosauridae

Subtaxa: Leptocleididae Polycotylidae

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Ecology: aquatic carnivore

Distribution:

• Cretaceous of Antarctica (1 collection), Argentina (4), Australia (8), Canada (13: Alberta, Manitoba, Northwest Territories, Nunavut, Saskatchewan), Germany (1), Japan (1), Jordan (1), Morocco (1), New Zealand (1), the Russian Federation (6), South Africa (1), Sweden (2), the United Kingdom (7), United States (41: Alabama, Colorado, Kansas, Montana, South Dakota, Texas, Utah, Wyoming)

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

• Jurassic of France (1)

Total: 91 collections including 98 occurrences

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