A weak cingulum is present on the labial side of the tooth between the protoconid and hypoconid.
12.
A long crest, the postcristid, connects the distocuspid to the hypoconid along the posterior side of the tooth.
13.
The cristid obliqua, a crest, descends from the hypoconid to a point on the lingual side of the protoconid.
14.
The talonid contains a hypoconid, hypoconulid, and entoconid and is much wider than the trigonid because the hypoconid is displaced buccally.
15.
The talonid contains a hypoconid, hypoconulid, and entoconid and is much wider than the trigonid because the hypoconid is displaced buccally.
16.
The second molar is about square and shows the four main cusps commonly present in rodents : the protoconid, metaconid, hypoconid, and entoconid.
17.
On the hypoconid, this crest forms a right angle with the posterolophid, which runs towards the hypoconulid in the back lingual corner of the tooth.
18.
A crest, the postcristid, descends from the hypoconid along the back margin of the tooth and almost reaches the entoconid, which is separated by a notch.
19.
On the second lower molar, the protoconid cusp is notably taller than the hypoconid; these cusps are about as high in " T . goodmani ".
20.
It is wider than long and contains a well-developed cusp, the hypoconid, on the outer side and a depression, the talonid basin, in the middle.
