Also known as USGS 15010
Where: Santa Barbara County, California (34.8° N, 120.2° W: paleocoordinates 34.5° N, 118.6° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Tinaquaic Sandstone Member (Sisquoc Formation), Messinian to Messinian (7.2 - 3.6 Ma)
• 25 ft stratigraphically higher than #36. The Sisquoc Formation contains two principal lithologic facies: a fine-grained basin facies (Todos Santos Claystone mbr) consisting chiefly of diatomaceous mudstone and a marginal sandstone facies ( Tinaquaic sandstone mbr). The basin facies of the Sisquoc Formation overlies the Monterey Formation without discordance. A maximum thickness of 5000 ft is estimated from the subsurface, although the maximum exposed thickness of the formation is 3000 ft. AGE: Revised to Messian-Zanclean consistent with EPICC stratigraphic revision.
• bed-level stratigraphic resolution
Environment/lithology: coastal; lithified, medium-grained, coarse, calcareous sandstone
Size class: macrofossils
Preservation: mold/impression, replaced with phosphate
Reposited in the USGS
Collection methods: quarrying,
• Presumably reposited in UGGS collections...not specified.
Primary reference: W. P. Woodring and M.N. Bramlette. 1950. Geology and paleontology of the Santa Maria District California. United States Geological Survey Professional Paper 222:1-185 [A. Miller/A. Hendy/S. Ávila]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 39335: authorized by Austin Hendy, entered by Austin Hendy on 26.05.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
Calyptraea sp. Lamarck 1799 slipper shell
Crepidula cf. princeps Conrad 1855 slipper shell | |
"Nassa" sp. Röding 1798 true whelk | |
Bivalvia | |
"Volsella cf. capax" = Modiolus capax
"Volsella cf. capax" = Modiolus capax Conrad 1837 mussel | |
Anadara cf. trilineata Conrad 1856 ark | |
Lucinoma cf. annulatum Reeve 1850 clam | |
Cryptomya cf. californica Conrad 1837 softshell clam | |
Mactromeris sp., "Spisula cf. hemphilli" = Mactromeris hemphillii
Mactromeris sp. Conrad 1868 clam
"Spisula cf. hemphilli" = Mactromeris hemphillii Dall 1894 clam | |
Compsomyax cf. subdiaphana, "Protothaca cf. staleyi" = Leukoma staleyi
Compsomyax cf. subdiaphana Carpenter 1864 venus clam
"Protothaca cf. staleyi" = Leukoma staleyi Gabb 1866 venus clam | |
Macoma cf. nasuta Conrad 1837 tellin clam | |
"Siliqua cf. media" = Siliqua alta
"Siliqua cf. media" = Siliqua alta Broderip and Sowerby I 1829 clam |