UCLA loc. 4111, Jalama Creek (Cretaceous of the United States)

Also known as LACMIP loc. 24111

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: VII 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

• "225-780' thick. Hard, thick-bedded to massive, grayish white to buff sandstone."

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 1516: 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.
Cephalopoda
 Ammonitida - Baculitidae
Baculites sp. Lamarck 1799 ammonite
Bivalvia
 Arcida - Glycymerididae
"Glycymeris suciensis" = Glycymerita veatchii
"Glycymeris suciensis" = Glycymerita veatchii Gabb 1864 clam
 Pholadida - Corbulidae
"Corbula pozo" = Panzacorbula pozo
"Corbula pozo" = Panzacorbula pozo Dailey and Popenoe 1966 clam
 Cardiida - Tancrediidae
Meekia (Mygallia) daileyi n. sp. Saul and Popenoe 1962 clam
 Cardiida -
Aphaea ignota n. sp. Dailey and Popenoe 1966 clam
 Cardiida - Mactridae
"Tellina mathewsonii" = Willimactra (Petromactra) mathewsonii Gabb 1864 clam
Cymbophora ? gabbiana Anderson 1902 clam
originally entered as "Cymbophora ? gabbiana"
Cymbophora cf. ashburnerii Gabb 1864 clam
originally entered as "Cymbophora cf. ashburnerii"
 Cardiida - Ungulinidae
Diplodonta davisi n. sp. Dailey and Popenoe 1966 clam
 Cardiida - Veneridae
"Calva varians" = Calva (Calva) varians
"Calva varians" = Calva (Calva) varians Gabb 1864 venus clam
 Solenida - Solenidae
Solen cf. cuneatus Gabb 1869 clam
"Solen" sp. cf. S. cuneatus - originally entered as "Solen cf. cuneatus"
Gastropoda
 Opisthobranchia - Scaphandridae
Ellipsoscapha skaios n. sp. Dailey and Popenoe 1966 snail
 Epitonioidea - Epitoniidae
Opalia sp. Adams and Adams 1853 wentletrap
(Confusiscala)
 Sorbeoconcha - Naticidae
"Gyrodes canadensis" = Gyrodes (Sohlella) canadensis Whiteaves 1903 moon snail
Euspira sp. Agassiz 1837 moon snail
 Sorbeoconcha - Aporrhaidae
"Lispodesthes rotundus" = Lispodesthes rotundatus
"Lispodesthes rotundus" = Lispodesthes rotundatus Waring 1917 snail
 Cerithioidea - Potamididae
Bittiscala sp. Finlay and Marwick 1937 horn snail
 Heterostropha - Acteonidae
"? Nonacteonina sp." = Nonactaeonina
"? Nonacteonina sp." = Nonactaeonina snail
originally entered as "? Nonacteonina sp."
 Heterostropha - Ringiculidae
Biplica obliqua Gabb 1864 snail