USNM loc. 2366, Rocky Creek (Cretaceous of the United States)

Also known as CAS loc. 69275

Where: Lake County, California (38.9° N, 122.5° W: paleocoordinates 37.0° N, 71.9° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Blue Ridge Member (Crack Canyon Formation), Valanginian (139.8 - 132.9 Ma)

• This area has been mapped as Valanginian (Lower Cretaceous) as part of the Blue Ridge member, comprising the lower member of the Crack Canyon formation (informal name of Lawton 1956), Great Valley Group. However, the extent and complexity of the bedding−plane faults in this area, with the resultingunconformities, was not fully appreciated in Lawton's time, andmany of the age assignments are based on inferences that requirefurther structural and stratigraphic evaluation (Dean A. Enderlin, personal communication, 2004).

Environment/lithology: basinal (); lithified limestone

Size class: macrofossils

Collected by Kiel

Primary reference: S. Kiel and K. A. Campbell. 2005. Lithomphalus enderlini gen. et sp. nov. from cold-seep carbonates in California—a Cretaceous neomphalid gastropod?. Palaeogeography, Palaeoclimatology, Palaeoecology 227:232-241 [J. Marcot/J. Marcot]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 151971: authorized by Matthew Clapham, entered by Marko Manojlovic on 27.10.2013, edited by Mark Uhen and Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

 Pectinida - Buchiidae
Buchia sp.3 Rouillier 1845 scallop
“Aucellas which are more inflated than Aucella piochii but not as large as Aucella crassicolis” (Lawton 1956: 87)
 Pectinida - Pectinoidae
Lyriochlamys complexicostata1 Gabb 1869 scallop
 Carditida - Astartidae
Oxyeurax trapezoidalis1 Stanton 1895 clam
 Lucinida - Lucinidae
"Tehamatea colusaensis" = Lucina colusaensis2
"Tehamatea colusaensis" = Lucina colusaensis2 Stanton 1895 clam
 Solemyida - Solemyidae
Acharax stantoni1 Vokes 1955 Awning Clam
 Sorbeoconcha - Paskentanidae
Atresius liratus3 Gabb 1869 snail
 Neomphalida - Neomphalidae
Lithomphalus enderlini n. gen. n. sp.
Lithomphalus enderlini n. gen. n. sp. Kiel and Campbell 2005 snail
 Vetigastropoda -
 Seguenzioidea - Eucyclidae
"Amberleya morganensis" = Ambercyclus morganensis3
"Amberleya morganensis" = Ambercyclus morganensis3 Stanton 1895 snail