Coal Oil Canyon (Cretaceous of the United States)

Where: Logan County, Kansas (38.9° N, 101.1° W: paleocoordinates 44.5° N, 71.1° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Baculites maclearni zone, Sharon Springs Member (Pierre Shale Formation), Middle Campanian (83.5 - 70.6 Ma)

• bed-level stratigraphic resolution

Environment/lithology: offshore; poorly lithified, concretionary shale

• "shallow inland sea"
• "soft, fissile, bituminous shale... contains numerous bentonites and septarian concretions"

Size classes: macrofossils, mesofossils

Preservation: concretion, replaced with pyrite

Collection methods: quarrying,

Primary reference: D. J. Cicimurri and M. J. Everhart. 2001. An elasmosaur with stomach contents and gastroliths from the Pierre Shale (Late Cretaceous) of Kansas. Transactions of the Kansas Academy of Science 104(3-4):129-143 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 25692: authorized by John Alroy, entered by John Alroy on 22.09.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Lamniformes - Anacoracidae
Squalicorax cf. pristodontus Agassiz 1843 crow shark
one tooth
Actinopteri
 Salmoniformes - Enchodontidae
Enchodus sp. Agassiz 1843
 Teleostei -
Clupeomorpha indet. Greenwood et al. 1966
"small"
Reptilia
 Sauropterygia - Elasmosauridae
Styxosaurus snowii Williston 1890 elasmosaur
complete skeleton