PBDB Collection

UCLA loc. 4120, Jalama Creek (Cretaceous of the United States)

Also known as LACMIP loc. 24120

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 1525: 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.

Show authors, comments, and common names

Bivalvia
Lucinida - Mactromyidae	Clisocolus dubius Clisocolus dubius Gabb 1864 clam
Cardiida - Tellinidae	Palaeomoera dyskritos Palaeomoera dyskritos Dailey and Popenoe 1966 tellin clam
Cardiida - Arcticidae	Etea occidentalis Etea occidentalis Dailey and Popenoe 1966 clam
Cardiida - Veneridae	Calva (Egelicalva) crassa¹, Legumen ooides Calva (Egelicalva) crassa¹ Saul and Popenoe 1992 venus clam Legumen ooides Gabb 1864 venus clam
Cardiida - Corbiculidae	Corbicula astartoides Corbicula astartoides Dailey and Popenoe 1966 clam
Pholadida - Corbulidae	"Corbula pozo" = Panzacorbula pozo "Corbula pozo" = Panzacorbula pozo Dailey and Popenoe 1966 clam
Trigoniida - Megatrigonioidae	"Trigonia evansana" = Pterotrigonia evansana "Trigonia evansana" = Pterotrigonia evansana Meek 1864 clam
Pectinida - Anomiidae	Anomia jalama Anomia jalama Dailey and Popenoe 1966 jingle
Gastropoda
Cerithioidea - Potamididae	? Terebralia juliana ? Terebralia juliana Dailey and Popenoe 1966 horn snail originally entered as "? Terebralia juliana"
Sorbeoconcha - Naticidae	"Gyrodes canadensis" = Gyrodes (Sohlella) canadensis "Gyrodes canadensis" = Gyrodes (Sohlella) canadensis Whiteaves 1903 moon snail
Neogastropoda - Fasciolariidae	? Piestochilus sp. ? Piestochilus sp. Meek 1864 snail originally entered as "? Piestochilus sp."
Neogastropoda - Volutidae	Volutoderma jalama², Volutoderma ynezae² Volutoderma jalama² Saul and Squires 2008 volute Volutoderma sp. cf. V. averillii - originally entered as "Volutoderma cf. averillii" Volutoderma ynezae² Saul and Squires 2008 volute originally entered as "Volutoderma ? magna"
Neritoidea - Neritidae	Nerita sp. Nerita sp. Linnaeus 1758 snail
Scaphopoda
Dentaliida - Dentaliidae	Dentalium sp. Dentalium sp. Linnaeus 1758 tusk shell

¹Saul and Popenoe 1992; ²Saul and Squires 2008