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 65 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: coastal; lithified, shelly/skeletal 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 52805: authorized by Austin Hendy, entered by Austin Hendy on 21.08.2005
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
Calyptraea sp. Lamarck 1799 slipper shell | |
Turritella sp. Lamarck 1799 turret shell | |
Bonellitia paucivaricata Gabb 1864 snail | |
"Ficopsis remondi" = Ficus remondii
"Ficopsis remondi" = Ficus remondii Gabb 1864 fig shell | |
"? Ectinochilus sp." = Rimella
"? Ectinochilus sp." = Rimella Agassiz 1840 true conch | |
Naticidae indet. Guilding 1834 moon snail | |
Bivalvia | |
? Solen sp. Linnaeus 1758 clam | |
Corbula sp. Bruguière 1789 clam | |
Pitaria californiana, "Macrocallista cf. hornii" = Callista (Costacallista) hornii
"Macrocallista cf. hornii" = Callista (Costacallista) hornii Gabb 1864 venus clam as "Macrocallista cf. horni"
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"Spisula merriami" = Mactromeris merriami, "Spisula cf. bisculpturata" = Mactromeris bisculpturata, "Spisula cf. acutirostrata" = Mactromeris acutirostrata
"Spisula merriami" = Mactromeris merriami Packard 1916 clam
"Spisula cf. bisculpturata" = Mactromeris bisculpturata Anderson and Hanna 1925 clam
"Spisula cf. acutirostrata" = Mactromeris acutirostrata Packard 1916 clam | |
Cardiidae indet. Lamarck 1809 cockle | |
"Semele diabloi" = Semele diaboli
"Semele diabloi" = Semele diaboli Dickerson 1915 clam | |
"Tellina cf. jollaensis" = Tellina (Angulus) jollaensis, "Tellina cf. lebecki" = Tellina (Phyllodina) lebecki
"Tellina cf. jollaensis" = Tellina (Angulus) jollaensis Dickerson 1916 tellin clam
"Tellina cf. lebecki" = Tellina (Phyllodina) lebecki Anderson and Hanna 1925 tellin clam | |
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