UCMP A-2921, near south fork of Elder Creek (Jurassic of the United States)

Where: Tehama County, California (39.9° N, 122.6° W: paleocoordinates 36.0° N, 69.5° W)

• coordinate estimated from map

When: Tithonian (152.1 - 145.0 Ma)

• [Anderson 1945] "about 4,575 feet above base of Elder Creek group"

•[Imlay and Jones 1970] About 4,000 ft, above fault contact of Jurassic Buchia-bearing beds with Franciscan rocks and about 5,000 ft below top of B. piochii zone

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Collected by R. L. Rist in 1937; reposited in the UCMP

Primary reference: F. M. Anderson. 1945. Knoxville series in the California Mesozoic. Geological Society America Bulletin 56(10):909-1014 [J. Marcot/J. Marcot]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 215756: authorized by Jonathan Marcot, entered by Jonathan Marcot on 19.11.2020

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ammonitida - Neocomitidae
Kossmatia tehamaensis n. sp. Anderson 1945 ammonite
Bivalvia
 Pectinida - Pectinoidae
Pecten (Chlamys) risti n. sp. Anderson 1945 scallop