UCMP A3822, Bryon Quad (Eocene of the United States)

Where: Contra Costa County, California (37.9° N, 121.7° W: paleocoordinates 38.7° N, 107.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Domengine Formation, Lutetian (47.8 - 41.3 Ma)

• A short distance above basal conglomerate.

•Putnick et al. (2001): the Domengine and Avenal Sandstones correlate with earliest middle Eocene Chron C21r (47.9-49.0 Ma).

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified sandstone

Size class: macrofossils

Reposited in the UCMP

Primary reference: J. W. Durham. 1943. Pacific Coast Cretaceous and Tertiary corals. Journal of Paleontology 17(2):196-202 [W. Kiessling/W. Kiessling/W. Kiessling]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 185385: authorized by Matthew Clapham, entered by Matthew Clapham on 21.04.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Scleractinia - Caryophylliidae
Platytrochus diabloensis Durham 1943 stony coral