Fossil cast of fin from juvenile Sauripterus taylori
A fossil cast of a fin from a juvenile Sauripterus taylori, a late Devonian (roughly 375 million years ago) fish with the primitive features of tetrapods.
[Research supported by National Science Foundation grants EAR 0207721, EAR 0544093, EAR 0208377 and EAR 0544565.]
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Source: NSF Multimedia Gallery - Category: Science Source Type: video