CAS G Loc. 66767, Mitchell Creek Area, Bald Hills (Cretaceous of the United States)

Where: Shasta County, California (40.4° N, 122.7° W: paleocoordinates 39.7° N, 72.1° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Chickabilly Member (Budden Canyon Formation), Late/Upper Barremian (130.0 - 125.5 Ma)

• "upper Chickabilly Member of the Budden Canyon Formation"

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, bioturbated, nodular limestone and gray siltstone

• orange-weathering, nodular limestone horizon in a massive, dark gray siltstone with rare beds of sole-marked lithic wacke

Size class: macrofossils

Preservation: concretion

Collected by P. Embree and M. Murphy; reposited in the CAS

Primary reference: M. A. Murphy, P. U. Rodda, and P. G. Embree. 1995. A new heteromorph ammonite from the Barremian (Cretaceous) of California. Journal of Paleontology 69(6):1179-1182 [J. Marcot/J. Marcot]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 213725: authorized by Jonathan Marcot, entered by Jonathan Marcot on 09.09.2020

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Ammonitida - Aegocrioceratidae
Annuloceras summersi n. gen. n. sp.
Annuloceras summersi n. gen. n. sp. Murphy et al. 1995 ammonite