Seaboard Oil Corp., Oro Loma No. 1 (3200+ ft assemblage) (Eocene to of the United States)

Where: Madera County, California (36.9° N, 120.3° W: paleocoordinates 36.7° N, 107.9° W)

• coordinate stated in text

• hand sample-level geographic resolution

When: Kreyenhagen Formation, Middle Eocene to Middle Eocene (48.6 - 33.9 Ma)

• Fossils from 3200 feet and deeper below surface. Age listed in David 1946 as "Eogene" reflecting the author's interpretation of the age of the rocks as late Eocene to potentially early Oligocene. Formation as a whole now regarded as late middle Eocene to Eocene (see chapters in USGS Professional Paper 1713).

Environment/lithology: marine; shale

Size class: mesofossils

Preservation: mold/impression

Primary reference: L. R. David. 1946. Some typical Upper Eocene fish scales from California. Contributions to Paleontology, Carnegie Institute of Washington Publication 551:47-112 [P. Holroyd/P. Holroyd]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 191002: authorized by Patricia Holroyd, entered by Patricia Holroyd on 03.01.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

  - Coregonidae
Parastenodus gillensis David 1946 bony fish
reported range 3229-3242 feet below surface
 Beloniformes - Scomberesocidae
Praescomberesox pacificus David 1946
reported range 3220-3239 feet below surface
 Kurtiformes - Denticidae
Kreyenhagenius joaquinensis David 1946
reported range 3220-3229 feet below surface
 Gadiformes - Bregmacerotidae
Bregmaceros kreyenhagus David 1946
reported range 3220-3282 feet below surface