seymouriamorph

English

Noun

seymouriamorph (plural seymouriamorphs)

1. Any of the order †Seymouriamorpha of extinct limbed vertebrates.
   • 2012, Jennifer A. Clack, Gaining Ground, Second Edition: The Origin and Evolution of Tetrapods:

     The seymouriamorphs also share with anthracosaurs a palatal structure that, like those of very early tetrapods, is closed—that is to say, it lacks the palatal vacuities of temnospondyls.