LACMIP loc. 8198, Santa Ana Mountains (Cretaceous of the United States)

Also known as CIT loc. 1069

Where: Orange County, California (33.7° N, 117.6° W: paleocoordinates 35.0° N, 81.8° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Baker Canyon Member (Ladd Formation), Late/Upper Turonian (93.5 - 89.3 Ma)

• Ladd Formation, upper Baker Canyon Member. Age: Late Turonian.

• group of beds-level stratigraphic resolution

Environment/lithology: delta front; lithified siltstone and lithified shale

• "above wave base in normal marine waters"

•the Holz Shale in general is "in a shallow marine setting, including prodelta, lagoonal and bay environments"

• "Brown to gray siltstone and shale with interbedded lenses of stringers of limestone, conglomerate, and sandstone"

•apparently well lithified because strata were "broken" and "disarticulated" during collection

Size class: macrofossils

Collected by W.P. Popenoe in 14, 1934; reposited in the LACM

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: paleoecologic analysis

PaleoDB collection 220390: authorized by Jonathan Marcot, entered by Jonathan Marcot on 25.05.2021

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Gastropoda
 Architaenioglossa - Ampullinidae
Ampullina pseudoalveata
Ampullina pseudoalveata Packard 1922 snail
 Neogastropoda - Melongenidae
"Siphonalia dubius" = Saturnus dubius
"Siphonalia dubius" = Saturnus dubius Packard 1922 snail
 Sorbeoconcha - Aporrhaidae
Anchura (Helicaulax) tricosa4
Anchura (Helicaulax) tricosa4 Saul and Popenoe 1993 snail
 Heterostropha - Nerinellidae
"Turritella cf. parallela" = Nerinella parallela
"Turritella cf. parallela" = Nerinella parallela Anderson and Hanna 1935 snail
Cephalopoda
 Ammonitida - Baculitidae
Sciponoceras aff. bohemicum1
Sciponoceras aff. bohemicum1 Fritsch 1872 ammonite
Bivalvia
 Pectinida - Limidae
Lima (Acesta) beta n. sp.2, "Lima cf. suciensis" = Lima (Limatula) suciensis
Lima (Acesta) beta n. sp.2 Popenoe 1937 file clam
"Lima cf. suciensis" = Lima (Limatula) suciensis Whiteaves 1903 file clam
 Pectinida - Entoliidae
Syncyclonema operculiformis
Syncyclonema operculiformis Gabb 1864 scallop
 Ostreida - Pinnidae
Pinna calamitoides
Pinna calamitoides Shumard 1858 oyster
 Arcida - Glycymerididae
Trigonarca californica, "Glycymeris pacificus" = Glycymeris pacifica
Trigonarca californica Packard 1922 clam
"Glycymeris pacificus" = Glycymeris pacifica Anderson 1902 clam
 Arcida - Limopsidae
Limopsis silveradoensis5
Limopsis silveradoensis5 Packard 1922 clam
 Mytilida - Mytilidae
Inoperna bellarugosa
Inoperna bellarugosa Popenoe 1937 mussel
 Lucinida - Mactromyidae
Clisocolus corrugatus
Clisocolus corrugatus Popenoe 1937 clam
 Cardiida - Icanotiidae
Icanotia californica6
Icanotia californica6 Squires and Saul 2006 clam
 Cardiida - Arcticidae
Tenea inflata
Tenea inflata Gabb 1864 clam
(small variety)
 Cardiida - Glossidae
Isocardia delta
Isocardia delta Popenoe 1937 clam
 Cardiida - Veneridae
"Aphrodina arata" = Callistalox arata, "Trigonocallista regina" = Calva (Calva) regina, "Flaventia zeta" = Paraesa zeta
"Aphrodina arata" = Callistalox arata Gabb 1864 venus clam
"Trigonocallista regina" = Calva (Calva) regina Popenoe 1937 venus clam
"Flaventia zeta" = Paraesa zeta Popenoe 1937 venus clam
 Pholadida - Corbulidae
"Corbula traskii" = Caryocorbula traskii
"Corbula traskii" = Caryocorbula traskii Gabb 1864 clam
misspelled as "Corbula traski"
 Carditida - Crassatellidae
Crassatella gamma n. sp.2
Crassatella gamma n. sp.2 Popenoe 1937 clam
 Trigoniida - Megatrigonioidae
Pterotrigonia klamathonia3
Pterotrigonia klamathonia3 Anderson 1958 clam
1Matsumoto 1960; 2Popenoe 1937; 3Saul 1996; 4Saul and Popenoe 1993; 5Squires 2012; 6Squires and Saul 2006