Where: California (35.1° N, 120.2° W: paleocoordinates 30.4° N, 65.6° W)

• coordinate based on nearby landmark

• hand sample-level geographic resolution

When: Unit 2 Formation (Volcanopelagic Succession Group), Early/Lower Tithonian (150.8 - 145.5 Ma)

• Zone 4 beta - revision of chronostratigraphic assignment based on Baumgartner et al. (1995) and Kiessling et al. (1999)

• bed-level stratigraphic resolution

Environment/lithology: basinal (); lithified, tuffaceous lime mudstone

Size class: microfossils

Preservation: original silica

Collection methods: bulk, hydrochloric,

• Radiolarians only

Primary reference: D. M. Hull. 1997. Upper Jurassic Tethyan and Southern Boreal radiolarians from western North America. Micropaleontology 43(S2):1-202 [W. Kiessling/W. Kiessling/W. Kiessling] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 50740: authorized by Wolfgang Kiessling, entered by Wolfgang Kiessling on 20.05.2005, edited by Adam Kocsis