Where: Santa Clara County, California (37.3° N, 122.1° W: paleocoordinates 31.3° N, 62.2° W)
• coordinate based on nearby landmark
• hand sample-level geographic resolution
When: Bathonian to Bathonian (168.3 - 161.2 Ma)
• Franciscan pebble in Santa Clara Formation conglomerate
• bed-level stratigraphic resolution
Environment/lithology: basinal (siliceous); lithified, red chert
Size class: microfossils
Reposited in the USGS
Primary reference: E. V. Kohnen and B. L. Murchey. 1995. Age and origin of red chert pebbles in the lower part of the Santa Clara Formation, northern California. In E. M. Sangines, D. W. Andersen, A. B. Buising (eds.), Recent Geologic Studies in the San Francisco Bay Area 76:77-86 [M. Clapham/M. Clapham]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 185428: authorized by Matthew Clapham, entered by Matthew Clapham on 22.04.2017
Creative Commons license: CC BY (attribution)
Taxonomic list
Protozoa | |
Xiphostylus sp. Haeckel 1881 radiolarian | |
Transhsuum brevicostatum radiolarian | |
Stichocapsa convexa Yao 1979 radiolarian | |
Mirifusus aff. fragilis, "Praecaneta turpicula" = Praeparvicingula
Mirifusus aff. fragilis Baumgartner 1984 radiolarian
"Praecaneta turpicula" = Praeparvicingula radiolarian | |
? Angulobracchia sp. Baumgartner 1980 radiolarian |