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Aspects of the Biology of Trimerorhachis (Amphibia: Temnospondyli)

Everett C. Olson
Journal of Paleontology
Vol. 53, No. 1 (Jan., 1979), pp. 1-17
Stable URL: http://www.jstor.org/stable/1304028
Page Count: 17
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Aspects of the Biology of Trimerorhachis (Amphibia: Temnospondyli)
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Abstract

A new specimen of Trimerorhachis insignis Cope from the Vale Formation (Permian) of Texas forms the basis for description and interpretation of several aspects of this rhachitomous amphibian. A thick integument set with 4 to 20 or more layers of thin osteoderms covers the entire body. No surface scales have been found. A large basibranchial and a series of ceratobranchial arches indicate that this species was perennibranchiate and fully aquatic. Very young and adult individuals lived together in the same habitat and remains of very small individuals in the pharyngeal pouches suggest that Trimerorhachis was a pharyngeal pouch brooder. An alternative interpretation is that it was cannibalistic on its young.

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