Ptyonius Explained

Ptyonius is an extinct genus of nectridean tetrapodomorphs within the family Urocordylidae.[1]

Notes and References

  1. Book: Camp . Charles Lewis . Bibliography of Fossil Vertebrates, 1928-1933 . VanderHoof . Vertress Lawrence . 1940 . The Society . 978-0-8137-2027-2 . 494 . en.

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