Are there really any Styracosaur bonebeds?

["Pat Grant (Library: Serials Catalog" <PATG@VAX2.CONCORDIA.CA>]

Before the two "new" ceratopsians, Einiosaurus and Achelosaurus, were
described, it was said that there were bonebeds of Centrosaurus,
Styracosaurus, and Pachyrhinosaurus.  I believe at least two of the
bonebeds formerly considered Styracosaurus belong to the "new"
species.  Are there any left that are still considered Styraco?

--Pat Grant                                     patg@vax2.concordia.ca