ammonites
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Gateway to the Paleobiology Database
Hat Creek drainage (Cretaceous to of the United States)

Where: Fall River County County, South Dakota (43.2° N, 103.6° W: paleocoordinates 49.1° N, 71.7° W)

• coordinate based on nearby landmark

When: Baculites sp. (smooth) - Baculite perplexus ammonoid zone, Sharon Springs Member (Pierre Shale Formation), Early/Lower Campanian to Early/Lower Campanian (84.9 - 70.6 Ma)

• The Sharon Springs Member spans Baculites sp. (smooth) - Baculite perplexus in South Dakota (Gill et al. 1972)

• bed-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Reposited in the USNM

Primary reference: K. Carpenter. 1996. A review of short-necked plesiosaurs of the Western Interior, North America. Neues Jahrbuch fur Geologie und Palaontologie, Abhandlungen 201(2):259-287 [M. Carrano/H. Street] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 117861: authorized by Roger Benson, entered by Roger Benson on 28.09.2011

Creative Commons license: CC BY (attribution)