mesosaur

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Related to mesosaur: mosasaur

mesosaur

one of a group of Anapsid reptiles (order Mesosauria) from the Lower Permian which were fish-eating and looked superficially like crocodiles.

Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

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Palaeocene epoch

References in periodicals archive ?

Pineiro and colleagues Jorge Ferigolo, Melitta Meneghel and Michel Laurin recently discovered the exceptionally well-preserved mesosaur embryos at sites in Uruguay and Brazil.

World's first aquatic reptiles that lived before dinosaurs gave 'live births'

The fossa meckelii cannot be seen in Nyctiphruretus but mesosaurs (estimated from Modesto 2006 fig.

The phylogenetic position of Nyctiphruretus acudens, a parareptile from the Permian of Russia/Posicion filogenetica de Nyctiphruretus acudens, un parareptil del Permico de Rusia

He is of a generation sufficiently divorced from the old pulps that he's the dolphin among mesosaurs here.