Pappaceras is an extinct genus of rhinocerotoids from the Early Eocene of Asia belonging to Paraceratheriidae.

In 1963, material including a partial skull containing cheek teeth was unearthed in Late Eocene deposits of Mongolia.

These remains were identified as from a true rhinoceros by Wood, who found them an important discovery with the scant amount of previous cranial material of early rhinocerotids available.

The binomial created was Pappaceras confluens, classified as a close relative of Forstercooperia within Forstercooperiinae (before Forstercooperiidae, named in 1940 by Kretzoi).

All of these specimens were from the lame locality, the Upper Gray Clays, of the Irdin Manha Formation in Inner Mongolia.

[1] In the revision by Radnisky, it was found that this species was assignable to Forstercooperia, and the new combination F. confluens was erected.

In the 1960s, newly uncovered material from the Arshanto Formation was identified as belonging to a new species of rhinocerotoid.

F. crudus, named in 1977 by Gabunia, was found to be a nomen nudum, and Pappaceras synonymized with Forsterocooperia.

[7] Pappaceras is known from a vast amount of cranial material, although only some scant postcranial remains.

The nasal incision extends fairly far into the upper jaw, ending just posterior to the canine.

Pappaceras possesses a small post-incisor diastema, not as large as its descendants, and similar in size to that of Hyracodon.