Also known as USGS 15011
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)
• 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 39327: authorized by Austin Hendy, entered by Austin Hendy on 26.05.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Echinoidea | |
Dendraster cf. coalingaensis Clark and Twitchell 1915 sand dollar | |
Gastropoda | |
Crepidula cf. princeps Conrad 1855 slipper shell | |
"Nassa" sp. Röding 1798 true whelk | |
"Calicantharus cf. portolaensis" = Lirabuccinum portolaensis
"Calicantharus cf. portolaensis" = Lirabuccinum portolaensis Arnold 1908 snail | |
Bivalvia | |
Clinocardium (Clinocardium) sp. Keen 1936 cockle | |
"Protothaca staleyi" = Leukoma staleyi
"Protothaca staleyi" = Leukoma staleyi Gabb 1866 venus clam | |
Mactromeris sp. Conrad 1868 clam
Pseudocardium densatum n. sp. Conrad 1856 clam | |
Cryptomya cf. californica Conrad 1837 softshell clam | |
"Siliqua cf. media" = Siliqua alta
"Siliqua cf. media" = Siliqua alta Broderip and Sowerby I 1829 clam |