Soske Ranch Locality (Cretaceous of the United States)

Also known as V8120

Where: Fall River County, South Dakota (44.0° N, 103.3° W: paleocoordinates 49.8° N, 71.0° W)

• coordinate estimated from map

When: Gammon Ferruginous Member (Pierre Shale Formation), Early/Lower Campanian (83.5 - 70.6 Ma)

• Early Campanian, specimen occurs eleven feet below the Ardmore Bentonite

• member-level stratigraphic resolution

Environment/lithology: marine; ferruginous shale

Size classes: macrofossils, mesofossils

Preservation: trace

Reposited in the SDSM

Primary reference: P. R. Bjork. 1981. Food habits of mosasaurs from the Pierre Shale of South Dakota. Abstracts with Programs, Rocky Mountian Section, Geological Society of America 13(4):191 [J. Alroy/E. Leckey/E. Leckey]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 39388: authorized by John Alroy, entered by Erin Leckey on 27.05.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ammonitida - Baculitidae
Baculites sp. Lamarck 1799 ammonite
Chondrichthyes
 Elasmobranchii -
Elasmobranchii indet. Bonaparte 1838 elasmobranch
either Cretolamna or Lamna teeth
Actinopteri
 Tselfatiiformes - Plethodidae
Aves
 Hesperornithiformes - Hesperornithidae
Hesperornis sp. Marsh 1872 bird
Reptilia
 Squamata - Mosasauridae
Clidastes sp. Cope 1868 mosasaur