Where: Kern County, California (35.1° N, 119.2° W: paleocoordinates 34.1° N, 108.2° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: San Emigdio Formation (San Lorenzo Group), Late/Upper Eocene (37.2 - 33.9 Ma)
• STRATIGRAPHIC RELATIONS: From San Emigdio Fm San Lorenzo Group, which unconformably overlies the Meagnos and Tejon Fm's (Early-Middle Eocene), and is unconformably overlain by the Pleito Fm (Early Oligocene) of the San Lorenzo Group. THICKNESS: From bed within unit of formation that reaches 700 ft in thicknes. AGE: Late Eocene on the basis of molluscan biostratigraphy. STRATIGRAPHIC POSITION: From upper unit of the formation.
• bed-level stratigraphic resolution
Environment/lithology: coastal; lithified, shelly/skeletal, brown, gray, blue, sandy shale and lithified, fine-grained, shelly/skeletal sandstone
Size class: macrofossils
Reposited in the UCMP
Collection methods: surface (in situ),
• COLLECTOR: Presumably C. M. Wagner and K. H. Schilling (1917). REPOSITORY: Univeristy of California Collections of Invertebrate Paleontology, presumably UCMP.
Primary reference: C. M. Wagner and K. H. Schilling. 1923. The San Lorenzo Group of the San Emigdio region, California. University of California Publications, Bulletin of the Department of Geological Sciences 14(6):235-276 [A. Hendy/A. Hendy/A. Hendy]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 71174: authorized by Austin Hendy, entered by Austin Hendy on 20.04.2007, edited by Jonathan Marcot
Creative Commons license: CC BY (attribution)
Taxonomic list
Scaphopoda | |
Dentalium sp. Linnaeus 1758 tusk shell | |
Gastropoda | |
Crepidula praerupta, "Calyptraea excentrica" = Calyptraea diegoana
Crepidula praerupta Conrad 1849 slipper shell
"Calyptraea excentrica" = Calyptraea diegoana Conrad 1855 slipper shell | |
Epitonium sp. Bolten 1798 wentletrap | |
Natica recluziana Deshayes 1839 moon snail | |
"Siphonalia merriami" = Siphonalia (Kelletia) merriami
"Siphonalia merriami" = Siphonalia (Kelletia) merriami Wagner and Schilling 1923 true whelk | |
"Perse lincolnensis" = Hemifusus lincolnensis
"Perse lincolnensis" = Hemifusus lincolnensis Winkle 1918 snail | |
Bivalvia | |
"Yoldia cooperii" = Yoldia (Portlandia) cooperii1
| |
"Acila shumardi" = Acila (Truncacila) shumardi
"Acila shumardi" = Acila (Truncacila) shumardi Dall 1909 divaricate nutclam | |
"Modiolus multiradiatus" = Brachidontes (Scolimytilus) multiradiatus
"Modiolus multiradiatus" = Brachidontes (Scolimytilus) multiradiatus Gabb 1866 mussel | |
Cardium sp. Linnaeus 1758 cockle | |
Antigona undosa, "Antigona mathewsonii" = Amiantis mathewsoni
Antigona undosa Clark 1918 venus clam
"Antigona mathewsonii" = Amiantis mathewsoni Gabb 1866 venus clam | |
"Spisula ramonensis" = Mactromeris ramonensis, "? Spisula rushi" = Mactromeris rushi, "Spisula packardi" = Pseudocardium packardi
"Spisula ramonensis" = Mactromeris ramonensis Packard 1916 clam
"? Spisula rushi" = Mactromeris rushi Wagner and Schilling 1923 clam
"Spisula packardi" = Pseudocardium packardi Dickerson 1917 clam | |
"Phacoides richthofeni" = Here excavata
"Phacoides richthofeni" = Here excavata Carpenter 1857 clam |