USGS MR8843 (pebble 1), Maryknoll Seminary (Jurassic of the United States)

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

 Nassellaria - Hsuidae
Parahsuum (Lupherium) simplum Yao 1982 radiolarian
 Nassellaria - Syringocapsidae
Katroma sp. Pessagno and Poisson 1981 radiolarian
 Spumellaria - Xiphostylidae
Archaeocenosphaera sp. Pessagno et al. 1989 radiolarian
 Spumellaria - Pantanelliidae
Pantanellium sp. Pessagno 1977 radiolarian