SMNH Locality 72K09-0005 (Cretaceous to of Canada)

Also known as Lake Diefenbaker

Where: Saskatchewan, Canada (50.5° N, 107.8° W: paleocoordinates 57.0° N, 72.2° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Judith River Formation (Montana Group), Middle Campanian to Middle Campanian (83.5 - 70.6 Ma)

• "at the base of exposures...approximately 3 m in thickness"

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; poorly lithified, gray sandstone

• "nearshore environment"
• "soft, grey sandstone"

Size class: macrofossils

Collected by Norm Yurchyshyn and SMNH in 1975 or 1976 (Yurchyshyn), 1990 (SMNH)

Primary reference: T. T. Tokaryk. 1992. Baptornis sp. (Aves: Hesperornithiformes) from the Judith River Formation (Campanian) of Saskatchewan, Canada. Journal of Paleontology 66(6):1010-1012 [J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 75030: authorized by John Alroy, entered by John Alroy on 15.09.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Myliobatiformes - Dasyatidae
Myledaphus bipartitus Cope 1876 whiptail stingray
 Selachii -
Selachii indet. shark
"selachians"
 Euselachii - Mitsukurinidae
Scapanorhynchus sp. Woodward 1889 goblin shark
Actinopteri
 Teleostei -
Reptilia
 Testudines -
"Chelonia indet." = Testudines
"Chelonia indet." = Testudines Batsch 1788 turtle
 Testudines - Trionychidae
Aspideretes sp. Hay 1904 softshell turtle
 Theropoda -
Theropoda indet. theropod
"small"
Aves
 Hesperornithiformes - Baptornithidae
Baptornis sp. Marsh 1877 bird
SMNH P2306.2 (fourth? dorsal vertebra)
Reptilia
 Avetheropoda - Tyrannosauridae
Albertosaurus sp. Osborn 1905 Alberta lizard
 Neornithischia - Ceratopsidae
Chasmosaurinae indet. Lambe 1915 ceratopsid
 Neornithischia - Hadrosauridae
Lambeosaurinae indet. Parks 1923 lambeosaurine
 Loricata -
Crocodylia indet. crocodilian
scutes
 Choristodera -
Champsosaurus sp. Cope 1876 choristodere
 Sauropterygia - Polycotylidae
Polycotylidae indet. Williston 1908 plesiosaur
vertebra