Trimerorhachis insignis Cope, 1878
Systematics: Temnospondyli Dvinosauria Trimerorhachidae
Size: up to 1 m long
Type Horizon and Locality: Early Devonian, Nocona or Petrolia Formation, Wichita Group (Artinskian) Texas, US
Type Specimen: AMNH 4565, partial skeleton
This temnospondyl amphibian from Texas preserved external gills as an adult just like modern axolotls.
December 20, 2017
References:
Williston, S. W. (1915). Trimerorhachis, a Permian temnospondyl amphibian. The Journal of Geology, 23(3), 246-255.
Pawley, K. A. T. (2007). The postcranial skeleton of Trimerorhachis insignis Cope, 1878 (Temnospondyli: Trimerorhachidae): a plesiomorphic temnospondyl from the Lower Permian of North America. Journal of Paleontology, 81(5), 873-894.
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