Seaboard Oil Corp., Welch No. 1 (Eocene to of the United States)

Where: Fresno County, California (36.6° N, 120.5° W: paleocoordinates 36.4° N, 108.1° W)

• coordinate stated in text

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

• Fossils from 4037 to 4245 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 191013: authorized by Patricia Holroyd, entered by Patricia Holroyd on 04.01.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Actinopteri
 Clupeiformes - Clupeoidei
Pseudoetringus kreyenhagius n. gen. n. sp. David 1946 herring
Wisslerius sardinelloides n. gen. n. sp. David 1946 hering