Diceratops

dye-SERR-ah-tops /daɪˈsɛrətɒps/

Synonym of Triceratops

two-horned face

  • di · Greek · two
  • keras · Greek · horn
  • ops · Greek · face

The name combines Greek words for "two", "horn" and "face". Richard Swann Lull chose it in 1905 for a horned dinosaur skull that seemed to have only two brow horns and no nose horn. This set it apart from the three-horned Triceratops. The nose-horn difference is now thought to be an abnormality in that one skull.

Named by
Lull
Year named
1905
Period
Late Cretaceous
Stage
Maastrichtian
Found in
Lance Formation, Wyoming, USA

Diceratops is a ceratopsid named from a single skull, and the type species is D. hatcheri. It was long treated as a separate genus. Many researchers now regard it as a Triceratops, either an aberrant individual or a Triceratops species. The name was also reported to be preoccupied. Lull proposed the replacement name Diceratus in 1933. I am not fully certain of that detail.