CIT loc. 1163, Modjeska Canyon, Santa Ana Mountains (Cretaceous of the United States)

Also known as loc. F24a of Schoellhamer et al., 1981; LACMIP loc. 10091

Where: Orange County, California (33.7° N, 117.6° W: paleocoordinates 39.4° N, 87.8° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Turritella chicoensis other zone, Holz Shale Member (Ladd Formation), Middle Campanian (83.5 - 70.6 Ma)

• Ladd Fm., Holz Shale Member [Campanian, Turritella chicoensis assemblage].

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

Size class: macrofossils

Collected by W.P. Popenoe in 16, 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 220926: authorized by Jonathan Marcot, entered by Jonathan Marcot on 26.06.2021

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Trigoniida - Megatrigonioidae
Pterotrigonia evansana Meek 1864 clam
 Carditida - Astartidae
Eriphyla lapidis Packard 1922 clam
 Cardiida - Arcticidae
Etea angulata Packard 1922 clam
 Arcida - Parallelodontidae
"Parallelodon cf. vancouverensis" = Indogrammatodon vancouverensis
"Parallelodon cf. vancouverensis" = Indogrammatodon vancouverensis Meek 1858 clam
 Arcida - Cucullaeidae
"Cucullaea youngi" = Cucullaea (Idonearca) youngi
"Cucullaea youngi" = Cucullaea (Idonearca) youngi Waring 1917 clam
 Arcida - Glycymerididae
"Glycymeris veatchii" = Glycymerita veatchii
"Glycymeris veatchii" = Glycymerita veatchii Gabb 1864 clam
Gastropoda
 Cerithioidea - Turritellidae
Turritella chicoensis Gabb 1864 turret shell
 Sorbeoconcha - Capulidae
"Lysis californiensis" = Lysis suciensis
"Lysis californiensis" = Lysis suciensis Whiteaves 1879 snail
 Sorbeoconcha - Aporrhaidae
Tessarolax distorta Gabb 1864 snail
questionable occurrence