USGS loc. 5149, Chico Martinez Creek (Oligocene of the United States)

Also known as USGS loc. M4469

Where: Kern County, California (35.4° N, 119.9° W: paleocoordinates 34.0° N, 111.7° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Wygal Sandstone Member (Temblor Formation), Late/Upper Oligocene (28.4 - 23.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; lithified, shelly/skeletal sandstone

• ENVIRONMENT: Warm, shallow-water depositional environment - less than 20 fathoms and possibly much shallower.
• SPECIFIC LITHOLOGY: Fossiliferous sandstone. LITHIFICATION: Lithified based on figured specimens.

Size class: macrofossils

Collected by Ralph Arnold; W. O. Addicott in 1908; 1971; reposited in the USGS, USNM

Collection methods: surface (in situ),

Primary reference: W. O. Addicott. 1973. Oligocene molluscan biostratigraphy and paleontology of the Lower Part of the type Temblor Formation, California. United States Geological Survey Professional Paper 791:1-48 [A. Hendy/A. Hendy/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 219727: authorized by Jonathan Marcot, entered by Jonathan Marcot on 20.04.2021

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for gastropoda, bivalvia, and scaphopoda. NOMENCLATURE: Authoritative publication with subgeneric and species level assignments, though slightly antiquated nomenclature.
Bivalvia
 Hiatellida - Hiatellidae
Panopea ramonensis Clark 1925 clam
 Cardiida - Tellinidae
Tellina (Tellinella) tenuilineata Clark 1918 tellin clam
"Macoma arctata" = Macoma (Psammacoma) arctata Conrad 1849 tellin clam
"Heteromacoma rostellata" = Psammotreta (Leporimetis) rostellata Clark 1918 tellin clam
 Cardiida - Veneridae
Amiantis mathewsoni Gabb 1866 venus clam
Pitar (Katherinella) sp. Römer 1857 venus clam
questionable occurrence
Dosinia (Dosinia) cf. whitneyi Gabb 1866 venus clam
Clementia (Egesta) pertenuis Gabb 1864 venus clam
 Cardiida - Mactridae
"Spisula cf. albaria" = Mactromeris albaria
"Spisula cf. albaria" = Mactromeris albaria Conrad 1848 clam
 Lucinida - Lucinidae
Lucinoma acutilineata Conrad 1849 clam
 Arcida - Arcidae
 Pectinida - Pectinoidae
Vertipecten alexclarki Addicott 1973 scallop
questionable occurrence
 Ostreida - Ostreidae
? Crassostrea sp. Sacco 1897 oyster
Gastropoda
 Neogastropoda - Siphonaliidae
Bruclarkia seattlensis Durham 1944 snail