Among the fossils he studied were a m2 from Napak I (NAP-1), close in dimensions and morphology to NAP XV 162'08, the two molars lacking a paraconid, the trigonid valley being high and small, and the talonid narrower than the trigonid.
The valley in front of the trigonid is small and is bordered anteriorly by a subtle cingulum.
690; Table I; Figure 2f) has an anteriorly projected paraconid without enamel band; a metaconid enamel band is present; meta-entoconid fold shallow and reflected 45[degrees] anteromesialy; ento-hypoconid fold deeper and less inclined (85[degrees]) anteromesialy than meta-entoconid fold; hypoconid buccolingually broad, looks like a trigonid
size; anterior facet of the trigonid
convex; the lingual enamel band extends to the metaconid to the anterolingual side of the hypoconid, without covering it totally; buccal enamel fold deeper; buccal enamel band covering the anteromesial protoconid facet through posteromesial hypoconulid facet; hypoconid lingually projected; buccal enamel broader than lingual enamel.
Additionally, a third distinct species exists in manuscript form and can be differentiated by smaller size and a wider talonid than trigonid
on the m1 (7).
Canis nehringi has an enlarged ml as on TERA-154, but lacks accessory cuspids on the posterior margin of the trigonid
as on the specimen from Terapa.
The depression of the trigonid
is open and 'V' shaped.
geismarianus is characterized by an m I with a low, short trigonid
with the metaconid slightly more posterior than the protoconid, a large talonid, subequal entoconid and hypoconid, compressed m2 trigonid
with an anterobuccal cingulid, and a very small paraconid SDSM 8640 differs from N geismarianus in that the length of the ml is not as reduced and has a lesser degree of trigonid
compression on the m2.
lusitanica differ from those of the other species of the genus in the smaller paraconid and a shorter trigonid
when compared to the talonid.
The talonid is slightly larger in length than the trigonid
Material and measurements (L x TRW): 1 trigonid
of a lower molar (m2?
The m1 lacking a metaconid or with a residual metaconid; tendency toward shortening of the talonid and elongation of the trigonid
The paralophid is short; the trigonid
is V-shaped and the posterior valley is U-shaped; the labial cingulum is absent; the hypolophid reclines backwardly; the entoconid is lingually flat; the talonid is better developed than the trigonid
; the labial groove is shallow and U-shaped in both premolar and molars.