Where: Santa Clara County, California (37.3° N, 122.1° W: paleocoordinates 26.4° N, 57.6° W)
• coordinate based on nearby landmark
• hand sample-level geographic resolution
When: Pliensbachian (190.8 - 182.7 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 185422: authorized by Matthew Clapham, entered by Matthew Clapham on 22.04.2017
Creative Commons license: CC BY (attribution)
Taxonomic list
Protozoa | |
Archaeocenosphaera sp. Pessagno et al. 1989 radiolarian | |
Katroma sp. Pessagno and Poisson 1981 radiolarian | |
Parahsuum (Lupherium) simplum Yao 1982 radiolarian | |
Pantanellium sp. Pessagno 1977 radiolarian |