Chasmosaurus

chasm lizard (opening lizard)

• chasma · Greek · opening, hollow, chasm
• sauros · Greek · lizard

The name combines the Greek "chasma" (opening or chasm) with "sauros" (lizard). It refers to the very large openings (fenestrae) in the bony neck frill, which are separated by thin bars of bone. Lawrence Lambe named it in 1914.

Named by

Lambe

Year named

1914

Period

Late Cretaceous

Stage

Campanian

Found in

Dinosaur Park Formation, Alberta, Canada

A ceratopsid (centrosaurine relative; a chasmosaurine) with a broad, long frill. The type species is Chasmosaurus belli, and C. russelli is also recognised.