USGS Cenozoic M4643 Liveoak Canyon (Eocene of the United States)

Also known as UCMP IP8662

Where: Kern County, California (35.0° N, 118.9° W: paleocoordinates 35.2° N, 105.6° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Liveoak Shale Member (Tejon Formation), Middle Eocene (47.8 - 37.7 Ma)

• Middle Eocene, "Transition Stage" or "Tejon Stage." The co-occurrence of the two species of Ficopsis is suggestive of

•a "Transition" age, F. remondi crescentensis being characteristic of the "Tejon Stage." Turritella uvasana neopleura seems to be characteristic of the lower part of the Liveoak Shale Member and appears to range from the lower part of the "Tejon Stage" downward into the "Transition Stage." The affinities of this assemblage are decidedly with the fauna of the "Tejon Stage" rather than that of the "Domengine Stage."

• bed-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Collected by Nilsen, T. H. in 1971; reposited in the UCMP

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 194186: authorized by Patricia Holroyd, entered by Patricia Holroyd on 16.06.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

• Identified by W.O. Addicott.
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium sp. Linnaeus 1758 tusk shell
Dentalium cf. stentor Anderson and Hanna 1925 tusk shell
Bivalvia
 Arcida - Glycymerididae
Glycymeris sp. Da Costa 1778 clam
 Pholadida - Teredinidae
Teredo sp. Linnaeus 1758 clam
"borings"
 Cardiida - Cardiidae
 Cardiida - Psammobiidae
Gari sp. Schumacher 1817 clam
 Cardiida - Tellinidae
"Tellina lebecki" = Tellina (Phyllodina) lebecki
"Tellina lebecki" = Tellina (Phyllodina) lebecki Anderson and Hanna 1925 tellin clam
 Cardiida - Veneridae
Pitar sp. Römer 1857 venus clam
 Carditida - Crassatellidae
Crassatella sp. Lamarck 1799 clam
 Carditida - Carditidae
Venericardia sp. Lamarck 1801 clam
Gastropoda
  -
Gastropoda indet. Cuvier 1795 snail
Undetermined internal mold
 Sorbeoconcha - Ficidae
"Ficopsis remondi" = Ficus remondii, "Ficopsis horni" = Priscoficus hornii
"Ficopsis remondi" = Ficus remondii Gabb 1864 fig shell
subspecies crescentensis
"Ficopsis horni" = Priscoficus hornii Gabb 1864 fig shell
 Sorbeoconcha - Cassidae
Galeodea sp. Link 1807 snail
 Neogastropoda - Turridae
Turridae indet. Swainson 1840 turrid
 Sorbeoconcha - Naticidae
Polinices horni moon snail
"Euspira nuciformis" = Polinices (Euspira) nuciformis Gabb 1864 moon snail
 Cerithioidea - Turritellidae
Turritella uvasana Conrad 1855 turret shell
subspecies neopleura and subspecies ?
 Epitonioidea - Epitoniidae
Epitonium (Boreoscala) sp. Kobelt 1905 wentletrap