Species: copei (LULL & WRIGHT, 1942) BRETT-SURMAN, 1990
Etymology: In honor of Edwin Drinker Cope.
= Anatosaurus copei LULL & WRIGHT 1942
= Edmontosaurus copei (LULL & WRIGHT, 1942) OLSHEVSKY, 1978 pro BRETT-SURMAN, 1975 (M.S. dissertation, unpublished)
= Diclonius mirabilis COPE, 1883 non (LEIDY, 1856, COPE, 1883 (nomen dubium) (partim)
Holotype: AMNH 5730
Locality: Near Moreau River, North of the Black Hills, South Dakota.
Horizon: Lance Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.
Material: Skull and complete skeleton
.
This skull is dorsal-ventrally crushed (Top and middle), bottom is an attempt to uncrush the skull.
Plesiotype: AMNH 5886
Locality: Crooked Creek, Montana.
Horizon: Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.
Material: Skeleton nearly complete.
Referred material:
CHAPMAN & BRETT-SURMAN, 1990
AMNH 5887, CM 16520:
A mounted specimen in the Ekalaka Museum, Montana.
CAMPIONE & EVANS, 2011
Locality:
Horizon:
Biostratigraphy:
Age:
Material:
CMM: Skull and dentary.
MOR 003: Skull and dentary.
HORNER, 1992
Locality:
Horizon:
Biostratigraphy:
Age:
Material:
BMNH R4862:
LUPTON, GABRIEL & WEST, 1980Locality: Chris's Bone bed, McCone County, Montana.
Horizon: Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.
Material:
MP M 4441, 4442: Fragmentary skeletons.
This is an undescribed skeleton, notice the long tail with vertebrae long past the last chevrons.