CIT loc. 1068, Santa Ana Mountains: Late Turonian, California
collected by W.P. Popenoe

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda - Ampullinidae
Ampullina pseudoalveata (Packard 1922)
Cephalopoda - Ammonitida - Scaphitidae
Scaphites cf. gillisi Anderson 1902
Matsumoto 1960
Bivalvia - Mytilida - Mytilidae
Inoperna bellarugosa n. sp. Popenoe 1937
Popenoe 1937
Bivalvia - Arcida - Glycymerididae
Glycymeris pacificus (Anderson 1902)
Trigonarca californica Packard 1922
Bivalvia - Pectinida - Limidae
Lima beta Popenoe 1937
Bivalvia - Trigoniida - Megatrigoniidae
Trigonia cf. evansana Meek 1864
Saul 1991
Bivalvia - Carditida - Crassatellidae
Crassatella gamma Popenoe 1937
Bivalvia - Cardiida - Veneridae
Flaventia zeta n. sp. Popenoe 1937
Popenoe 1937
Aphrodina arata (Gabb 1864)
Trigonocallista regina (Popenoe 1937)
Bivalvia - Cardiida - Glossidae
Isocardia delta Popenoe 1937
Bivalvia - Lucinida - Mactromyidae
Clisocolus corrugatus Popenoe 1937
see common names

Geography
Country:United States State/province:California County:Orange
Coordinates: 33.7° North, 117.6° West (view map)
Paleocoordinates:35.0° North, 81.8° West
Basis of coordinate:based on nearby landmark
Geographic resolution:small collection
Time
Period: Cretaceous Epoch: Late Cretaceous
Stage: Turonian 10 m.y. bin: Cretaceous 6
Key time interval: Late Turonian
Age range of interval: 93.9 - 89.8 m.y. ago
Stratigraphy
Formation:Ladd Member:Baker Canyon
Stratigraphic resolution:group of beds
Stratigraphy comments: Ladd Formation, upper Baker Canyon Member. Age: Late Turonian.
Lithology and environment
Primary lithology: lithified siltstone
Secondary lithology: lithified "shale"
Lithology description: "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
Environment:delta front
Geology comments: "above wave base in normal marine waters"
the Holz Shale in general is "in a shallow marine setting, including prodelta, lagoonal and bay environments"
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:surface (in situ),field collection
Reason for describing collection:paleoecologic analysis
Museum repositories:LACM
Collectors:W.P. Popenoe
Metadata
Also known as:LACMIP loc. 8197
Database number:220932
Authorizer:J. Marcot Enterer:J. Marcot
Modifier:J. Marcot Research group:marine invertebrate
Created:2021-06-26 16:42:33 Last modified:2021-07-03 14:25:53
Access level:the public Released:2021-06-26 16:42:33
Creative Commons license:CC BY
Reference information

Primary reference:
75907. 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]

Secondary references:

29214 T. Matsumoto. 1960. Upper Cretaceous ammonites of California. Part III. Memoirs of the Faculty of Science, Kyushu University Series D, Geology, Special Volume II 1-204 [A. Hendy/A. Hendy/A. Hendy]
64770 W. P. Popenoe. 1937. Upper Cretaceous Mollusca from Southern California. Journal of Paleontology 11(5):379-402 [J. Marcot/J. Marcot]
78321 L. R. Saul. 1991. Type And Referred Specimens of Fossil Invertebrata in the Natural History Museum of Los Angeles County, Supplement 3: Mollusca Formerly Conserved at the University of California, Los Angeles. Natural History Museum of Los Angeles County, Technical Reports 6:1-173 [J. Marcot/J. Marcot/J. Marcot]