Where: Siskiyou County, California (41.9° N, 122.6° W: paleocoordinates 48.7° N, 88.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Asuncion Group, Coniacian (89.8 - 86.3 Ma)

• A correlative horizon of Coniacian, which is found as the same stratigraphic position as that at Henley "Assemblage was found near the base of the Senonian and about 350 ft above the upper Turonian."

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified shale

Size class: macrofossils

Collection methods: quarrying,

• Collected and identified by Anderson.

Primary reference: F. M. Anderson. 1958. Upper Cretaceous of the Pacific Coast. Geological Society of America Memoir 71:1-378 [A. Miller/A. Hendy/M. Clapham]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 44271: authorized by Austin Hendy, entered by Austin Hendy on 07.09.2004, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)