Panoche Hills canyon (Cretaceous of the United States)

Where: Fresno County, California (36.7° N, 120.8° W: paleocoordinates 42.8° N, 96.2° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: an unnamed canyon in the Panoche HillsTierra Loma Shale Member (Moreno Formation), Maastrichtian (72.1 - 66.0 Ma)

• "late early to early late Maastrichtian age, as established by studies of foraminifers, gastropods, and ammonites"

• bed-level stratigraphic resolution

Environment/lithology: marine; gypsiferous, gray shale

• "dark-colored, bituminous and highly gypsiferous shales"

Size class: macrofossils

Collected by Chad M. Staebler in 1980; reposited in the UCMP

Primary reference: J. Lindgren. 2009. Cranial osteology of the giant mosasaur Plesiotylosaurus (Squamata, Mosasauridae). Journal of Paleontology 83(3):448-456 [M. Carrano/H. Street]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 103992: authorized by Matthew Carrano, entered by Hallie Street on 04.02.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

 Squamata - Mosasauridae
Plesiotylosaurus crassidens Camp 1942 mosasaur
UCMP 137249
Prognathodon cf. waiparaensis Welles and Gregg 1971 mosasaur
UCMP 152663