Ventrally, the new adult pelage was evident only along the midline.
"Mammals of Northwestern South Dakota"
Kenneth W. Andersen
Even though the rostrum of the fossil is narrower than in Recent species of Cratogeomys, the ventral border in the area of the palatine slits is more heavily constructed than in any of the living species, and it is nearly parallel-sided rather than tapered toward the midline anteriorly.
"Pleistocene Pocket Gophers From San Josecito Cave, Nuevo Leon, Mexico"
Robert J. Russell
The midline suture is straight, the lateral margins are nearly straight, the anterior margin slopes evenly posterolaterally, and the posterior margin is slightly convex to straight.
"A New Genus of Pennsylvania Fish (Crossoperygii, Coelacanthiformes) from Kansas"
Joan Echols