Species: bonneri (ADAMS, 1974) CLARK, O’KEEFE & STACK, 202
= Trinacromerum bonneri ADAMS, 1974 (nomen vanum)
Etymology: In honor of Orville W. Bonner of KUVP.
= Dolichorhynchops bonneri (ADAMS, 1974) O’KEEFE, 2008
Holotype: KUVP (KUMNH) 40002
Locality: Johnson Ranch, 4 miles west of KUHMN 40001, northern Niobrara County, Wyoming.
Horizon: Sharon Springs Member (was referred to the Redbird member), Pierre Formation.
Biostratigraphy:
Age: Upper Campanian Stage, Upper Senonian Subepoch, Upper Gulf Epoch, Late Cretaceous.
Material: Entire vertebral column, both coracoids, scapulae, clavicles, interclavicle, humeri, proximal portions of flippers, ischia, ilia, both femora and almost entire flipper of each.
Referred material:
Locality: Wallace Ranch, southern Fall River County, South Dakota.
Horizon: Sharon Springs Member (was referred to the Redbird member), Pierre Formation.
Biostratigraphy:
Age: Upper Campanian Stage, Upper Senonian Subepoch, Upper Gulf Epoch, Late Cretaceous.
Material:
KUVP (KUMNH) 40001: Skull, first 3 cervical vertebrae, indeterminate pectrum, left humerus and proximal epipodials, scattered dorsal vertebrae and ribs, both pubes, left ilium, and shaft and proximal end of left femur.
NICHOLLS, 1988
Locality: Manitoba Province, Canada.
Horizon: Pembina Member, Pierre Shale.
Biostratigraphy:
Age: Campanian Stage, Upper Senonian Subepoch, Upper Gulf Epoch, Late Cretaceous.
Material:
P73.05.02, P78.05.07, P80.03.15, P84.04.18: Partially articulated specimen.
P80.06.14, P81.05.16: Disarticulated specimens.
P73.05.02, P80.03.15, P81.05.16: Juvenile specimens.
Locality: South Dakota.
Horizon: Sharon Springs Member, Pierre Shale.
Biostratigraphy:
Age: Upper Lower to Lower Middle Campanian Stage, Senonian Subepoch, Upper Gulf Epoch, Late Cretaceous
Material:
As per NICHOLLS, 1988
KUVP 69467, SDSM 5092:
O'KEEFE, 2008
Locality: McLennan County, Texas.
Horizon: Taylor Marl.
Biostratigraphy:
Age: Late Cretaceous.
Material:
TAMU 3001:
CARPENTER, 1996
Locality: Hat Creek drainage, Fall River County, South Dakota.
Horizon: Sharon Springs Member, Pierre Shale.
Biostratigraphy:
Age: Middle Campanian Stage, Senonian Subepoch, Upper Gulf Epoch, Late Cretaceous
Material:
USNM 55810: Fragmentary skull and partial skeleton of a juvenile.
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