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. It is not specified which of three members this collection is from.
• bed-level stratigraphic resolution
Environment/lithology: coastal; lithified 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 52803: authorized by Austin Hendy, entered by Austin Hendy on 21.08.2005
Creative Commons license: CC BY (attribution)
Taxonomic list
Lingulata | |
Discinisca sp. Gray 1840 | |
Gastropoda | |
Fissurella aff. behri Dickerson 1914 snail | |
Calyptraea cf. diegoana Conrad 1855 slipper shell | |
? Naticidae indet., "Amauropsis alveata" = Amaurellina moragai
? Naticidae indet. Guilding 1834 moon snail
"Amauropsis alveata" = Amaurellina moragai Stewart 1927 moon snail | |
| |
? Olivella sp. Swainson 1831 olive snail | |
Pseudoperissolax blakei Conrad 1855 murex snail | |
Bivalvia | |
"Brachiodontes ornatus" = Brachidontes (Brachidontes) cowlitzensis
"Brachiodontes ornatus" = Brachidontes (Brachidontes) cowlitzensis Weaver and Palmer 1922 mussel [entered as Brachydontes ornatus]
| |
Spondylus carlosensis Anderson 1905 scallop | |
Lima sp. Bruguière 1797 file clam | |
? Ostrea sp. Linnaeus 1758 oyster | |
"Halonanus horni" = Pachecoa hornii
"Halonanus horni" = Pachecoa hornii Gabb 1864 clam | |
"Schedocardia breweri" = Schedocardia brewerii
"Schedocardia breweri" = Schedocardia brewerii Gabb 1864 cockle | |
Tellina sp. Linnaeus 1758 tellin clam | |
"Gari hornii" = Gari (Gobraeus) hornii, Gari cf. diegoensis
"Gari hornii" = Gari (Gobraeus) hornii Gabb 1864 clam
Gari cf. diegoensis Hanna 1927 clam | |
Macrocallista sp. Meek 1876 venus clam | |
"Spisula cf. acutirostrata" = Mactromeris acutirostrata
"Spisula cf. acutirostrata" = Mactromeris acutirostrata Packard 1916 clam | |
Corbula sp. Bruguière 1789 clam | |
Crassatella sp. Lamarck 1799 clam | |
Venericardia sp. Lamarck 1801 clam | |
Anthozoa | |
Anthozoa indet. Ehrenberg 1834 |