Jergins Oil Company, Chaney Ranch No. 1 (4278 feet and lower) (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: Tumey Formation, Middle Eocene to Middle Eocene (48.6 - 33.9 Ma)

• Fossils from 4278 feet below surface and lower. 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 191016: authorized by Patricia Holroyd, entered by Patricia Holroyd on 04.01.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Actinopteri
 Beloniformes - Hemiramphidae
"Hemiexocoetus eocenicus" = Eoexocoetus eocenicus
"Hemiexocoetus eocenicus" = Eoexocoetus eocenicus David 1946
stated range: 4278 feet and deepe
 Carangiformes - Carangidae
Caranx orolomaensis David 1946
stated range: 4304-4360 feet
 Kurtiformes - Denticidae
Kreyenhagenius joaquinensis David 1946
stated range: 4330 feet and deeper
 Gadiformes - Bregmacerotidae
Bregmaceros kreyenhagus David 1946
stated range: 4330 feet and deeper
 Clupeiformes - Clupeoidei
Pseudoetringus kreyenhagius David 1946 herring
stated range: 4433-4460 feet
? Alosa ganolytoides David 1946 hering
stated range: 4304-4360 feet
Wisslerius sardinelloides David 1946 hering
stated range: 4304-4407 feet
Osteichthyes
 Isospondyli - Cyclolepidae
Cyclolepoides tuberculatus David 1946
stated range: 4304-4360 feet