UCMP loc. A-4312, NW Berryessa (Jurassic of the United States)

Also known as Christensen's Ranch; UCMP loc. A-4489, UCMP loc. A-4500

Where: Napa County, California (38.7° N, 122.3° W: paleocoordinates 34.7° N, 69.4° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Great Valley Group, Tithonian (152.1 - 145.0 Ma)

• group-level stratigraphic resolution

Environment/lithology: marine; lithified limestone

• Many lenses and nodules of impure limestone, which weather to a dirty white and on a fresh surface are grey−black. These lenses range from six inches to a foot in thickness, and several fossiliferous horizons were found

Size class: macrofossils

Primary reference: S. K. Kiel, K. A. C. Campbell, W. P. Elder and C. T. S. Little. 2008. Jurassic and Cretaceous Gastropods from Hydrocarbon Seeps in Forearc Basin and Accretionary Prism Settings, California. Acta Palaeontologica Polonica 53(4):679-703 [M. Clapham/M. Manojlovic/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 151974: authorized by Matthew Clapham, entered by Marko Manojlovic on 27.10.2013, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

 Sorbeoconcha - Hokkaidoconchidae
Hokkaidoconcha sp. Kaim et al. 2008 snail
Hokkaidoconcha occidentalis Stanton 1895 snail
 Sorbeoconcha - Paskentanidae
Paskentana berryessaensis n. sp. Kiel et al. 2008 snail
Paskentana paskentaensis Stanton 1895 snail
 Seguenzioidea - Eucyclidae
"Amberleya cf. dilleri" = Ambercyclus dilleri
"Amberleya cf. dilleri" = Ambercyclus dilleri Stanton 1895 snail
 Lepetellida - Fissurellidae
? Fissurella sp. Bruguière 1789 snail
 Belemnoidea -
Belemnitida indet. Zittel 1895 belemnite
"belemnite phragmocone"
 Cardiida - Veneridae
Veneridae indet. Rafinesque 1815 venus clam
as "? Tivela sp." which is only known from Cenozoic
 Lucinida - Lucinidae
"Lucina ovalis" = Tehamatea ovalis
"Lucina ovalis" = Tehamatea ovalis Stanton 1895 clam
 Pectinida - Buchiidae
Buchia aff. piochii Gabb 1864 scallop
 Rhynchonellida - Dimerellidae
Cooperrhynchia cf. schucherti Stanton 1895
"a species closely similar to Cooperrhynchia schucherti"