Picrocleidus is an extinct genus of plesiosaur. It is known only from the combinatio nova of the type species Muraenosaurus beloclis Seeley 1892, P. beloclis from the Middle Jurassic Oxford Clay Formation (Callovian stage) of the United Kingdom.[1][2]
^Benson, R. B. J.; Druckenmiller, P. S. (2013). "Faunal turnover of marine tetrapods during the Jurassic-Cretaceous transition". Biological Reviews. 89 (1): 1–23. doi:10.1111/brv.12038. PMID 23581455. S2CID 19710180.
^Andrews, Charles W 1910. A descriptive catalogue of the marine reptiles of the Oxford Clay, Part 2. British Museum (Nat. Soc.) 13:139-149.
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