Placochelyidae is an extinct family of

placodont Placodonts (" Tablet teeth") are an extinct order of marine reptiles that lived during the Triassic period, becoming extinct at the end of the period. They were part of Sauropterygia, the group that includes plesiosaurs. Placodonts were genera ...

s belonging to the superfamily

Cyamodontoidea Cyamodontoidea is an extinct superfamily of placodont marine reptiles from the Triassic period. It is one of the two main groups of placodonts, the other being Placodontoidea. Cyamodontoids are distinguished from placodontoids by their large sh ...

Genus

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Glyphoderma ''Glyphoderma'' is an extinct genus of placodont reptile from the Middle Triassic of China. It differs from its relative '' Psephochelys'' in having three, rather than one, fused osteoderms on the posterior skull surface, and has an earlier tempo ...

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Placochelys ''Placochelys'' ('flat-plate turtle") is an extinct genus of placodont reptiles erected by Otto Jaekel in 1902. Fossil records Fossils of ''Placochelys'' dates back to the Triassic period (age range: 221.5 to 205.6 million years ago). They have ...

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Psephosauriscus ''Psephosauriscus'' is an extinct genus of placodont reptile from the Middle Triassic of Israel and Egypt. It is known from bony armor plates that have been found from Makhtesh Ramon in Israel's Negev desert and Araif en Naqua on Egypt's Sinai Pe ...

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Psephochelys ''Psephochelys (meaning "pebbly turtle")'' is an extinct genus of placodont reptile from the Late Triassic of China. It is represented by a single species, ''Psephochelys polyosteoderma'', named in 2002 on the basis of a single partial skeleton ...

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References

Placodonts Prehistoric reptile families Triassic sauropterygians Middle Triassic first appearances Late Triassic first appearances {{triassic-reptile-stub