CIT Loc. 976 - Corona [Pleasants Sandstone] (Cretaceous of the United States)

Also known as LACMIP Loc. 8181, LACMIP loc. 10877; UCLA loc. 4207, LACMIP Loc. 24207; Locality 71b of Schoellhamer et al., 1981

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

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Pleasants Member (Williams Formation), Late/Upper Campanian (83.5 - 70.6 Ma)

• LITHOSTRATIGRAPHIC RELATIONS: From the Pleasants Sandstone, for which lithostratigraphic relationships are not discussed. AGE: Upper Campanian in text; on the basis of ammonite biostratigraphy. STRATIGRAPHIC POSITION: Not stated in text.

• bed-level stratigraphic resolution

Environment/lithology: coastal; lithified sandstone

• ENVIRONMENT: Not reported in text, but apparently shallow marine siliciclastic.
• LITHOLOGY: Sandstone. LITHIFICATION: Lithified, on the basis of figured specimens.

Size class: macrofossils

Collected by Popenoe in 1933; reposited in the LACM

Collection methods: surface (in situ),

• COLLECTOR: Popenoe, 1933. REPOSITORY: California Institute of Technology (at the time).

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 86794: authorized by Austin Hendy, entered by Austin Hendy on 17.02.2009, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Includes multiple taxa reported in several publications; exhaustive for Ammonoidea. NOMENCLATURE: From authoritative publications, but comprising variable nomenclatural quality and species-resolution identifications.
Cephalopoda
 Ammonitida - Placenticeratidae
Metaplacenticeras pacificum Smith 1900 ammonite
 Ammonitida - Baculitidae
Baculites cf. rectus1 Marshall 1926 ammonite
Gastropoda
 Sorbeoconcha - Naticidae
Gyrodes (Sohlella) pacificus n. sp.4 Popenoe et al. 1987 moon snail
Gyrodes expansa Gabb 1864 moon snail
 Neogastropoda - Perissityidae
Perissitys pacifica3 Popenoe and Saul 1987 snail
 Neogastropoda - Melongenidae
"Fulgur hilgardi" = Pentzia hilgardi8
"Fulgur hilgardi" = Pentzia hilgardi8 White 1889 snail
 Neogastropoda - Volutidae
Volutoderma elderi7 Saul and Squires 2008 volute
 Heterostropha - Pyramidellidae
Odostomia santana Packard 1922 snail
 Heterostropha - Ringiculidae
Biplica obliqua2 Gabb 1864 snail
 Trochoidea - Turbinidae
"Margarites ornatissima" = Atira ornatissima
"Margarites ornatissima" = Atira ornatissima Gabb 1864 snail
Bivalvia
 Nuculida - Nuculidae
"Acila demessa" = Acila (Truncacila) demessa8
"Acila demessa" = Acila (Truncacila) demessa8 Finlay 1927 divaricate nutclam
 Cardiida - Veneridae
"Trigonocallista bowersiana" = Calva (Egelicalva) bowersiana, "Calva bowersiana" = Calva (Egelicalva) bowersiana8, Legumen ooides, "Flaventia lens" = Paraesa lens8
"Trigonocallista bowersiana" = Calva (Egelicalva) bowersiana Cooper 1894 venus clam
"Calva bowersiana" = Calva (Egelicalva) bowersiana8 Cooper 1894 venus clam
Legumen ooides Gabb 1864 venus clam
"Flaventia lens" = Paraesa lens8 Gabb 1864 venus clam
 Cardiida - Mactridae
Cymbophora popenoei5 Saul 1974 clam
Cymbophora triangulata5 Waring 1917 clam
 Cardiida - Tancrediidae
Meekia (Mygallia) daileyi6 Saul and Popenoe 1962 clam
 Lucinida - Mactromyidae
Clisocolus cordatus8 Whiteaves 1879 clam
 Carditida - Crassatellidae
Crassatella "n. sp. A"8 Lamarck 1799 clam
 Trigoniida - Megatrigonioidae
Pterotrigonia evansana8 Meek 1864 clam
 Arcida - Arcidae
Trinacria cor8 Popenoe 1937 clam
 Arcida - Glycymerididae
Glycymerita veatchii9 Gabb 1864 clam
as Glycymeris veatchii anae