plural noun

: an order of Permian Labyrinthodontia comprising generalized forms exhibiting a mixture of amphibian and reptilian characters and possibly on the ancestral line of the true reptiles

Word History


New Latin, from Seymouria, genus of Permian Labyrinthodontia (probably from the name Seymour + New Latin -ia) + -morpha

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Dictionary Entries Near Seymouriamorpha

Cite this Entry

“Seymouriamorpha.” Dictionary, Merriam-Webster, Accessed 23 Feb. 2024.

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