Proterocheris

fossil turtle genus

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Last updated

July 17, 2026

Quick Summary

Proterocheris was an ancient genus of fossil turtles that lived during the Triassic Period, approximately 230 million years ago. This genus is significant because it exhibits features suggesting it was a side-necked turtle.1

The evolution of turtles is a complex and debated topic, with various hypotheses based on DNA analysis and fossil morphology. Early turtles, unlike modern ones, often possessed teeth. The development of the turtle shell involved precursors to the plastron and carapace, with structures like elongated vertebrae and modified ribs playing a role.1

Proterocheris and similar Triassic genera may not be true side-necks but rather turtles with some shared characteristics. Unmistakable side-necked turtles (Pleurodira) and the other major turtle suborder, Cryptodira (hidden necks), appeared later in the fossil record.1

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turtle
Origin and evolution
Proterocheris is another ancient fossil turtle that lived at the same time as Proganochelys. Proterocheris has many features that suggest that it is a side-necked turtle. If this is true, the two major taxonomic groups of living turtles, suborders Pleurodira (side-necked turtles) and Cryptodira (hidden…
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Proterocheris is another ancient fossil turtle that lived at the same time as Proganochelys. Proterocheris has many features that suggest that it is a side-necked turtle. If this is true, the two major taxonomic groups of living turtles, suborders Pleurodira (side-necked turtles) and Cryptodira (hidden…
Read More