Describer

Lull, 1933

Time

Cretaceous Late Maastrichtian

Classification

Ornithischia Genasauria Cerapoda Marginocephalia Ceratopia Neoceratopia Ceratopidae Chasmosaurinae

Diet

Herbivore

Fossilsite

Judith River Wedge, Oldman Formation, Red Deer River, three miles southwest of Steveville, west side of river. Alberta, Canada

Fall Under

Chasmosaurus

Info

Skull

Chasmosaurus (Lambe, 1914) = Protorosaurus belli (Lambe, 1914)

Chasmosaurus > Chasmosaurus belli (Lambe, 1914) = Monoclonius belli (Lambe, 1902) >> Chasmosaurus brevirostris (Lull, 1933)

Chasmosaurus > Chasmosaurus russelli (Sternberg, 1940)

Chasmosaurus > Chasmosaurus canadensis (Lambe, 1902) = Monoclonius canadensis (Lambe, 1902)

ROM 00839 Holotype, partial skeleton. complete skull, collected in 1926