UCLA loc. 4116, Jalama Creek (Cretaceous of the United States)

Also known as LACMIP loc. 24116

Where: Santa Barbara County, California (34.5° N, 120.4° W: paleocoordinates 40.6° N, 90.6° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: V Member (Jalama Formation), Late/Upper Campanian (83.5 - 70.6 Ma)

• scale of strat. resolution could be group of beds. JA: the Jalama Formation is lower upper Campanian according to Squires and Saul 2003

• bed-level stratigraphic resolution

Environment/lithology: offshore; lithified, gray, yellow sandstone and conglomerate

• "180-230' thick. Hard, light grayish to buff, bedded arkosic sandstone, lenses of pebble conglomerate near base."

Size class: macrofossils

Collection methods: mechanical,

Primary reference: D. H. Dailey and W. P. Popenoe. 1966. Mollusca from the upper Cretaceous Jalama Formation, Santa Barbara County, California. University of California Publications in Geological Sciences 65:1-41 [J. Alroy/M. Sommers/A. Clement]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 1521: authorized by John Alroy, entered by Mike Sommers on 13.05.1999, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• Abundances: R (rare) = 1-2 specs., U (uncommon) = 3-10 specs., C (common) = 11-25 specs., A (abundant) = 26+ specs.
Bivalvia
 Cardiida - Veneridae
Calva (Egelicalva) crassa Saul and Popenoe 1992 venus clam
 Trigoniida - Megatrigonioidae
"Trigonia evansana" = Pterotrigonia evansana
"Trigonia evansana" = Pterotrigonia evansana Meek 1864 clam
 Pectinida - Anomiidae
Anomia jalama Dailey and Popenoe 1966 jingle
Gastropoda
 Architaenioglossa - Ampullinidae
Ampullina concipio Dailey and Popenoe 1966 snail