A shallow anteromedian flexus is present, superficially dividing the front cusp (anterocone).

The anterocone (front cusp) of the first upper molar is divided by a marked anteromedian flexus.

The anteroconid on m1 (the frontmost cusp, corresponding to the anterocone) contains an internal hollow, an anteromedian fossettid.

The front cusp of M1, the anterocone, is divided into two smaller cusps on each side of the tooth by a valley, the anteromedian flexus.

On the first lower molar, the labial and lingual conules of the anteroconid, the frontmost cusp, are separated by an anteromedian fossette.

The front cusps of the first upper and lower molar (anterocone and anteroconid, respectively) are broad and not divided completely by an anteromedian flexus or flexid.

The anteroconid-the cusp at the front of m1-is usually divided in two by a central indentation (the anteromedian fossettid) in A. donovani, but this fossettid is absent in A. praeuniversitatis.

The two agree in their robust skull with short incisive foramina, a broad braincase, a similarly formed interorbital, supraorbital crests situated close together near the middle of the skull, and presence of an anteromedian flexus on the upper first molar.

In A. donovani, a ridge generally connects the two cusps at the front margin of the tooth, so that the indentation separating them is closed at the front (an anteromedian fossette), but in A. praeuniversitatis, it is open toward the front (an anteromedian flexus).

The anterocone, the front cusp of the upper first molar, is not divided in two by an indentation at its front (anteromedian flexus), but does display a hollow in the middle, the anteromedian fossette, which divides it into separate cuspules at the labial and lingual (inner) sides of the molar.