The earliest known stem-tetrapod: Tungsenia paradoxa
Restoration of Tungsenia paradoxa
Digital restorations of endocasts of Tungsenia paradoxa
Photo of endocasts and digital restorations of endocasts and endocranial cavity
Tungsenia paradoxa, the earliest known stem-tetrapod from the Lower Devonian (Pragian, ~409 million years ago) of China, extends the earliest record of tetrapods by some 10 million years.
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