USGS MR8847C pebble, Mt. Eden Road (Jurassic of the United States)

Where: Santa Clara County, California (37.3° N, 122.1° W: paleocoordinates 30.8° N, 60.6° W)

• coordinate based on nearby landmark

• hand sample-level geographic resolution

When: Bajocian (170.3 - 168.3 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 185425: authorized by Matthew Clapham, entered by Matthew Clapham on 22.04.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Nassellaria - Unumidae
Unuma aff. echinatus, "Protonuma sp." = Protunuma
Unuma aff. echinatus Ichikawa and Yao 1976 radiolarian
"Protonuma sp." = Protunuma Ichikawa and Yao 1976 radiolarian
 Nassellaria - Hsuidae
Transhsuum sp. Takemura 1986 radiolarian
Parahsuum (Lupherium) sp. Yao 1982 radiolarian
 Nassellaria - Eucyrtidiidae
Stichocapsa convexa Yao 1979 radiolarian
 Nassellaria - Parvicingulidae
Ristola sp. Pessagno and Whalen 1982 radiolarian
 Spumellaria - Angulobracchiidae
Angulobracchia sp. Baumgartner 1980 radiolarian
 Spumellaria - Emiluviidae
Emiluvia sp. Foreman 1973 radiolarian
 Spumellaria - Xiphostylidae
Xiphostylus sp. Haeckel 1881 radiolarian
 Spumellaria - Pantanelliidae
Pantanellium sp. Pessagno 1977 radiolarian