CIT loc. 1154, Dayton Canyon (Cretaceous of the United States)

Also known as LACMIP loc. 10706

Where: Ventura County, California (34.2° N, 118.7° W: paleocoordinates 40.1° N, 88.8° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Chatsworth Formation, Middle Campanian (83.5 - 70.6 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

Size class: macrofossils

Collected by W.P. Popenoe in 18, 1935.; reposited in the LACM

Collection methods: surface (in situ),

Primary reference: W. P. Popenoe. 1942. Upper Cretaceous formations and faunas of southern California. Bulletin of the American Association of Petroleum Geologists 26(2):162-187 [J. Marcot/J. Marcot]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 221105: authorized by Jonathan Marcot, entered by Jonathan Marcot on 06.07.2021

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ammonitida - Placenticeratidae
Metaplacenticeras californicum Anderson 1902 ammonite
Gastropoda
 Heterostropha - Ringiculidae
"Oligoptycha obliqua" = Biplica obliqua
"Oligoptycha obliqua" = Biplica obliqua Gabb 1864 snail
 Cerithioidea - Turritellidae
Turritella chicoensis Gabb 1864 turret shell
as ssp. Turritella chicoensis perrini
 Sorbeoconcha - Naticidae
Gyrodes expansa Gabb 1864 moon snail
Bivalvia
 Nuculida - Nuculidae
"Acila demessa" = Acila (Truncacila) demessa
"Acila demessa" = Acila (Truncacila) demessa Finlay 1927 divaricate nutclam
 Trigoniida - Trigoniidae
Trigonia "sp. A cf. T evansana" Bruguière 1789 clam
 Cardiida - Tancrediidae
Meekia (Mygallia) daileyi Saul and Popenoe 1962 clam
 Cardiida - Mactridae
Cymbophora ashburnerii Gabb 1864 clam
Cymbophora gabbiana Anderson 1902 clam
 Cardiida - Veneridae
"Trigonocallista bowersiana" = Calva (Egelicalva) bowersiana, "Flaventia lens" = Paraesa lens
"Trigonocallista bowersiana" = Calva (Egelicalva) bowersiana Cooper 1894 venus clam
"Flaventia lens" = Paraesa lens Gabb 1864 venus clam
 Cardiida - Arcticidae
Tenea inflata Gabb 1864 clam
(large variety)
 Lucinida - Mactromyidae
Clisocolus cordatus Whiteaves 1879 clam
 Arcida - Cucullaeidae
"Cucullaea youngi" = Cucullaea (Idonearca) youngi
"Cucullaea youngi" = Cucullaea (Idonearca) youngi Waring 1917 clam
 Arcida - Arcidae
Trinacria cor Popenoe 1937 clam
 Arcida - Glycymerididae
"Glycymeris veatchii" = Glycymerita veatchii
"Glycymeris veatchii" = Glycymerita veatchii Gabb 1864 clam
 Pectinida - Anomiidae
Anomia lineata Gabb 1864 jingle