Elasmosaurus type, McAllaster Butte (Cretaceous to of the United States)

Also known as McAllister Butte

Where: Logan County, Kansas (39.0° N, 101.4° W: paleocoordinates 44.7° N, 71.3° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Bacculites sp (weakly ribbed) - Bacculites perplexus ammonoid zone, Sharon Springs Member (Pierre Shale Formation), Early/Lower Campanian to Early/Lower Campanian (83.5 - 70.6 Ma)

• The Sharon Springs Member spans the Bacculites sp (weakly ribbed) - Bacculites perplexus Zones in Kansas (Gill et al. 1972)

• bed-level stratigraphic resolution

Environment/lithology: marine; gypsiferous lithology not reported

Size class: macrofossils

Collected by Theophilis H. Turner in c. 1868; reposited in the ANSP

• ANSP collection (Academy of Natural Sciences, Philadelphia)

Primary reference: E. D. Cope. 1868. On a new large enaliosaur. The American Journal of Science, series 2 46(137):263-264 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 77321: authorized by Matthew Carrano, entered by Matthew Carrano on 08.01.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

 Salmoniformes - Enchodontidae
Enchodus sp. Agassiz 1843
 Acanthomorphata - Sphyraenidae
Sphyraena carinata n. sp. Cope 1869 barracuda
 Sauropterygia - Elasmosauridae
Elasmosaurus platyurus n. gen. n. sp.
Elasmosaurus platyurus n. gen. n. sp. Cope 1868 elasmosaur
ANSP 10081