CIT loc. 1172, Silverado Canyon, Santa Ana Mountains (Cretaceous of the United States)

Also known as loc. F34b of Schoellhamer et al., 1981; LACMIP loc. 10085

Where: Orange County, California (33.8° N, 117.7° W: paleocoordinates 39.5° 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 220922: authorized by Jonathan Marcot, entered by Jonathan Marcot on 26.06.2021

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Neogastropoda - Volutidae
Volutoderma averillii Gabb 1864 volute
 Cerithioidea - Turritellidae
Turritella chicoensis Gabb 1864 turret shell
Bivalvia
 Lucinida - Mactromyidae
Clisocolus cordatus Whiteaves 1879 clam
 Carditida - Astartidae
Opis "n. sp. A" Defrance 1824 clam
 Arcida - Parallelodontidae
"Parallelodon cf. vancouverensis" = Indogrammatodon vancouverensis
"Parallelodon cf. vancouverensis" = Indogrammatodon vancouverensis Meek 1858 clam