| Measurements of the Type Specimen of Sauropleura foveata Cope. | |
| mm. | |
| Median length of interclavicle | 43 |
| Width of interclavicle, maximum | 23 |
Sauropleura enchodus Cope.
Cope, Proc. Am. Phil. Soc., p. 406, 1885 (Anisodexis).
Type: Specimen No. ([51]) 2558, American Museum of Natural History, Newberry Collection.
Horizon and locality: Discovered by Sam Huston at the Linton, Ohio, Coal Measures.
An examination of the type specimen ([plate 16, fig. 4]) of this form resulted in no new facts. The reference of the species to the Permian genus Anisodexis by Cope is probably incorrect. Our knowledge of the two known species of this genus is not sufficient to separate them, but for the sake of convenience the Linton species is placed in the genus Sauropleura. It is located here principally on account of the form and structure of the teeth. Cope's original description is given below:
"The generic characters are apparent in the very unequally sized teeth with round section. The portion upon which the species is based is a part of the right ramus of the mandible, which is in the specimen viewed from the inner side. The jaw is obliquely and smoothly truncated from below, for the symphysis and surface of the bone is smooth. There is a very large tooth near the extremity of the dentary bone. Behind it is an interval equal to three times the diameter of its base, which is followed by a tooth of about one-third the length of the first tooth. Posterior to this one are two teeth of the same size as the second, all being separated from each other by about a tooth's diameter. These are followed by three subequal teeth of about two-thirds the length of the first tooth, and separated by about their own diameter from each other. They are all perfectly straight, very acute, and without the trace of a cutting-edge. The inflection-grooves extend to or a little beyond the middle of the length."
The present species is smaller than the type of Anisodexis imbrecarius from the Texas Permian, to which genus Cope originally referred the present species, and the apices of the teeth do not display the opposite cutting-edges seen in the Texas form.
| Measurements of the Type Specimen. | |
| mm. | |
| Length of jaw, including 7 teeth | 31 |
| Depth of ramus at second tooth | 10 |
| Length of first tooth | 10.5 |
| Length of third tooth | 3.5 |
| Length of sixth tooth | 7.5 |