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
Description: The alveolar border of the teeth in the mandible (MBLUZ-P-3990, Figure 2f) is parallel with the inferior margin of the horizontal mandibular ramus; there is a relatively large mentonian foramen under the alveolus for the trigonid
of mi, which extends anteriorly to the posterior part of the p4 talonid.
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.
m1: (L: 1.44; TRW: 0.77; TLW: 0.91): The talonid is wider than the trigonid
. The hypolophid is well developed and does not reach the entoconid.
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.
A deep median valley of the trigonid
and the talonid and well developed hypoconulid development are the characteristic features of the studied specimens.
Material and measurements (L x TRW): 1 trigonid
of a lower molar (m2?) (CC1-5) (- x 0.70)
The talonid is slightly larger in length than the trigonid
. The stylids are not very bulbous.
The m1 lacking a metaconid or with a residual metaconid; tendency toward shortening of the talonid and elongation of the trigonid
. P3 with or without an internal root.
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.