The vertebral column is represented by a line which Cope suggests ([123]) may be the chorda dorsalis (notochord). Osseous vertebræ were probably present, but their nature is obscured by the carbonaceous matter covering them.
The ribs as preserved are long and curved. They are slender and attenuated at the distal ends. They were probably single-headed, but whether their articulation was intercentral or not can not be determined.
The other specimens which are referred to this species show nothing of importance in the way of structure. They consist for the most part of fragments which may or may not represent the species.
The species differs from the type of the genus (T. punctulatus) in the possession of a broadly rounded muzzle. This character will also separate it from other species of the genus. The sculpturing of the bones of the cranium is coarser in the present species than in the type. The form of the clavicle is different in the two species. The above-described species seems to be more closely allied to the form described as Tuditanus walcotti than to other species of the genus. I have been unable to detect the presence of limbs, although Cope says they are present.
| Measurements of the Type of Tuditanus brevirostris Cope. | |
| mm. | |
| Median length of skull | 15 |
| Width of skull at posterior border | 18 |
| Width of skull across orbits | 11.5 |
| Length of orbit | 3 |
| Width of orbit | 2 |
| Interorbital space | 4.5 |
| Length of clavicle | 7 |
| Width of clavicle | 3 |
| Length of longest rib preserved | 9 |
| Length of entire specimen | 54 |
The material consists of the type specimen with counterpart and two fragments which probably are to be associated with this species. Collected by Doctor J. S. Newberry.
Tuditanus longipes Cope.
Cope, Trans. Amer. Phil. Soc., XV, p. 210, 1874 (Sauropleura).
Cope, Geol. Surv. Ohio, II, pt. II, 398, pl. XXVI, fig. 2, 1875.
Type: Specimen No. 1099 G, American Museum of Natural History.