Definitions

1. noun

A genus of extinct, four-legged, herbivorous mammals, related to the early ancestors of modern mammals.

“Fossil evidence suggests that the early dinosaurs co-existed with the smaller, four-legged dinoceras.”

2. noun

An extinct genus of rhinoceros-like mammals with a horn and hooves.

“During the Paleocene epoch, the large, horned dinoceras roamed the Earth.”