UCLA loc. 4121, Jalama Creek (Cretaceous of the United States)

Also known as LACMIP loc. 24121

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 1526: 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
 Arcida - Glycymerididae
"Glycymeris suciensis" = Glycymerita veatchii
"Glycymeris suciensis" = Glycymerita veatchii Gabb 1864 clam
 Pectinida - Anomiidae
Anomia jalama
Anomia jalama Dailey and Popenoe 1966 jingle
 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
 Cardiida - Corbiculidae
Corbicula astartoides
Corbicula astartoides Dailey and Popenoe 1966 clam
 Cardiida - Veneridae
"Calva varians" = Calva (Calva) varians
"Calva varians" = Calva (Calva) varians Gabb 1864 venus clam
 Cardiida - Arcticidae
Etea occidentalis
Etea occidentalis Dailey and Popenoe 1966 clam
 Cardiida - Tellinidae
? Tellina sp.
? Tellina sp. Linnaeus 1758 tellin clam
originally entered as "? Tellina sp."
 Cardiida - Tancrediidae
Meekia daileyi
Meekia daileyi Saul and Popenoe 1962 clam
 Lucinida - Mactromyidae
Clisocolus dubius
Clisocolus dubius Gabb 1864 clam
Gastropoda
 Sorbeoconcha - Capulidae
Lysis duplicosta
Lysis duplicosta Gabb 1864 snail
 Sorbeoconcha - Aporrhaidae
"Lispodesthes rotundus" = Lispodesthes rotundatus
"Lispodesthes rotundus" = Lispodesthes rotundatus Waring 1917 snail
 Neogastropoda - Volutidae
Volutoderma cf. averillii
Volutoderma cf. averillii Gabb 1864 volute
Volutoderma sp. cf. V. averillii - originally entered as "Volutoderma cf. averillii"
 Neogastropoda - Buccinidae
Eripachya jalama
Eripachya jalama Squires and Saul 2003 true whelk
 Neogastropoda - Melongenidae
"Fulgur hilgardi" = Pentzia hilgardi
"Fulgur hilgardi" = Pentzia hilgardi White 1889 snail
 Neogastropoda - Fasciolariidae
? Piestochilus sp.
? Piestochilus sp. Meek 1864 snail
originally entered as "? Piestochilus sp."
 Cerithioidea - Potamididae
? Terebralia juliana
? Terebralia juliana Dailey and Popenoe 1966 horn snail
originally entered as "? Terebralia juliana"
 Cerithioidea -
"? Pseudoglauconia ainiktos" = Bullamirifica ainiktos
"? Pseudoglauconia ainiktos" = Bullamirifica ainiktos Dailey and Popenoe 1966 snail
originally entered as "? Pseudoglauconia ainiktos"
 Architaenioglossa - Ampullinidae
Ampullina concipio
Ampullina concipio Dailey and Popenoe 1966 snail