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Specimen #: P.84.04.18

Collection: Plesiosauria > Trinacromerum, Plesiosaur, "Tessa"

Status: stored


Partial Coracoid, Partial Scapula, Glenoid Fossa of Left and Right Coracoids, Vertebrae, Pelvic Girdle, Ribs, Clavical, Ischium, Illium

Measurements (6.7 x 7.9 x 28.5 cm)

Rough measruements were made using a hand held ruler, not a set of calipers. The above rough measurements pertain to only the Left Illium associated with this specimen.


NICHOLLS, E.L. 1989. Marine Vertebrates of the Pembina Member of the Pierre Shale (Campanian, Upper Cretaceous) of Manitoba and their Significance to the Biogeography of the Western Interior Seaway. University of Calgary, pp. ii-317.

Common Name: Trinacromerum, Plesiosaur, "Tessa"
Phylum: Chordata
Class: Reptilia
Order: Plesiosauria
Family: Polycotylidae
Genus: Trinacromerum
Species: bonneri
Geo Period: Cretaceous
Epoch: Campanian
Formation: Pierre Shale
Member: Assume Pembina
Current Location: Manitoba Escarpment
Credit: Dr. Elizabeth L. Nicholls, Henry Isaak, Don Bell, Jim Gardner
Current Condition