Learn how to say Ceratopsians correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word ceratopsian:
a gregarious quadrupedal herbivorous dinosaur of a group found in the Cretaceous period, including triceratops.
Infraorder Ceratopsia, order Ornithischia
early 20th century: from modern Latin Ceratopsia (plural) (from Greek keras, kerat- ‘horn’ + ops ‘face’) + -an