UCLA loc. 4127, Jalama Creek (Cretaceous of the United States)

Also known as LACMIP loc. 24127

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 1528: authorized by John Alroy, entered by Mike Sommers on 13.05.1999

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
 Pectinida - Anomiidae
Anomia jalama Dailey and Popenoe 1966 jingle
 Arcida - Glycymerididae
"Glycymeris apletos" = Glycymerita veatchii, "Glycymeris suciensis" = Glycymerita veatchii
"Glycymeris apletos" = Glycymerita veatchii Gabb 1864 clam
"Glycymeris suciensis" = Glycymerita veatchii Gabb 1864 clam
 Cardiida - Mactridae
Cymbophora ? gabbiana Anderson 1902 clam
originally entered as "Cymbophora ? gabbiana"
 Cardiida - Arcticidae
Etea occidentalis Dailey and Popenoe 1966 clam
 Cardiida - Veneridae
"Calva varians" = Calva (Calva) varians Gabb 1864 venus clam
Legumen ooides Gabb 1864 venus clam
 Lucinida - Mactromyidae
Clisocolus dubius Gabb 1864 clam
 Carditida - Crassatellidae
Crassatella saulae Dailey and Popenoe 1966 clam
 Trigoniida - Steinmanellidae
"Trigonia hemphilli" = Popenoella hemphilli
"Trigonia hemphilli" = Popenoella hemphilli Anderson 1958 clam
 Trigoniida - Megatrigonioidae
"Trigonia evansana" = Pterotrigonia evansana
"Trigonia evansana" = Pterotrigonia evansana Meek 1864 clam
Gastropoda
 Architaenioglossa - Ampullinidae
Ampullina concipio Dailey and Popenoe 1966 snail
 Neogastropoda - Buccinidae
Eripachya ponderosa Gabb 1864 true whelk
 Cerithioidea -
"? Pseudoglauconia ainiktos" = Bullamirifica ainiktos
"? Pseudoglauconia ainiktos" = Bullamirifica ainiktos Dailey and Popenoe 1966 snail
originally entered as "? Pseudoglauconia ainiktos"