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Re: Styracosaur disappearance

dunn1@IDT.NET wrote:
> When did the last of the Styracosaurs hang on until?  When does the
> last species disappear from the fossil record?

STYRACOSAURUS albertensis Lambe,1913 
[including S.parksi & Monoclonius nasicornus ] 
Campanian Judith River Formation,Alberta,Canada

STYRACOSAURUS ovatus Gilmore,1920
Campanian Maastrichtian Two Medicine Formation, Montana,US

with regards
Fred Bervoets