ceratopsian

1. not comparableOf or belonging to the Ceratopsia suborder of dinosaurs.

   Triceratops is a ceratopsian dinosaur.

   1 more example

   One common ceratopsian feature is a frill extending from the back of the skull.

plural ceratopsians

1. Any member of this suborder

   Bipedal hadrosaurs, great hulking lambeosaurs, certain rhino-like ceratopsians and relatives of the velociraptors - all large and probably able swimmers - had the greatest success.

   2018, Tim Flannery, Europe: A Natural History, page 31

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   You know, seeing as you bring up so many groups that people claim "all look alike except for maybe x" but really aren't once you actuall look at them (passerines, hadrosaurs, ceratopsians, etc.), maybe you need to write a book on the subject. It would be a rather interesting read.

   2011 February 2, anonymous author, article comment