sharp outward-pointing teeth, indicating a diet of fish and squid.

Taxonomy

The Nothosauroidea has been suggested to consist of two suborders, the Pachypleurosauria, which are small primitive forms, and the Nothosauria (including two families Nothosauridae and Simosauridae), which may have evolved from pachypleurosaurs.

The relation of pachypleurosaurs

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