Where: Kern County, California (34.9° N, 118.8° W: paleocoordinates 34.5° N, 106.9° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Tejon Formation, Bartonian (41.3 - 38.0 Ma)
• From upper Tejon Formation, and most likely from "Tejon" stage, or possibly the "Transition" stage. Therefore a upper Middle Eocene=Narizian=Bartonian age is assigned to the collection, although it is possibly as old as Lutetian. The Tejon Formation unconformably overlies basement, and is unconformably overlain by the Tecuya Formation (Oligocene) in this section. About 75 m stratigraphically below top of undivided Tejon Formation. It is not specified which member of the Tejon Formation the collection is derrived.
• bed-level stratigraphic resolution
Environment/lithology: transition zone or lower shoreface; lithified, silty, carbonaceous sandstone
Size class: macrofossils
Reposited in the USGS
Collection methods: quarrying,
• Collected by T.H. Nilson and W.O. Addicott. Collections likely to be reposited at USGS Menlo Park or USNM (not specified).
Primary reference: T. H. Nilsen. 1987. Stratigraphy and sedimentology of the Eocene Tejon Formation, western Tehachapi and San Emigdio mountains, California. United States Geological Survey Professional Paper 1268:1-110 [A. Miller/A. Hendy/R. McClees-Funinan]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 52817: authorized by Austin Hendy, entered by Austin Hendy on 22.08.2005
Creative Commons license: CC BY (attribution)
Taxonomic list
Lingulata | |
Discinisca sp. Gray 1840 | |
Bivalvia | |
Spondylus carlosensis Anderson 1905 scallop | |
Pteria sp. Scopoli 1777 pearl oyster | |
| |
"Spisula merriami" = Mactromeris merriami
"Spisula merriami" = Mactromeris merriami Packard 1916 clam | |
Pitar sp. Römer 1857 venus clam | |
? Schedocardia sp. Stewart 1930 cockle | |
"Tellina cf. jollaensis" = Tellina (Angulus) jollaensis, "Tellina castacana" = Tellina (Angulus) castacana, "Tellina cf. longa" = Tellina (Angulus) longa
"Tellina cf. jollaensis" = Tellina (Angulus) jollaensis Dickerson 1916 tellin clam
"Tellina castacana" = Tellina (Angulus) castacana Anderson and Hanna 1925 tellin clam
"Tellina cf. longa" = Tellina (Angulus) longa Gabb 1864 tellin clam | |
? Corbula sp. Bruguière 1789 clam | |
Scaphopoda | |
? Dentalium sp. Linnaeus 1758 tusk shell | |
Gastropoda | |
Acmaeidae indet. Forbes 1850 limpet | |
? Amauropsis sp. Mörch 1857 moon snail | |
Bonellitia sp. Jousseaume 1887 snail | |
Fissurella aff. behri Dickerson 1914 snail |