New reptiles and stegocephalians from the Upper Triassic of western Texas Case, E. C. (Ermine Cowles), 1871-1953 creator text book Washington The Carnegie Institution of Washington 1922 1922
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ENG Labyrinthodontidae Paleontology Reptiles, Fossil Texas Triassic QE861 .C37 Carnegie Institution of Washington publication, 321 https://www.biodiversitylibrary.org/bibliography/17757 22021171 10.5962/bhl.title.17757