CIT loc. 974, Aliso-Santiago Creek Divide (Cretaceous of the United States)

Also known as LACMIP loc. 6096, LACMIP loc. 10105

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: Metaplacenticeras pacificum ammonoid zone, Pleasants Member (Williams Formation), Late/Upper Campanian (83.5 - 70.6 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; lithified sandstone

Size class: macrofossils

Collected by W.P. Popenoe in 1933; 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: taxonomic analysis

PaleoDB collection 72057: authorized by Wolfgang Kiessling, entered by Uta Merkel on 24.05.2007, edited by Matthew Clapham and Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ammonitida - Placenticeratidae
Metaplacenticeras pacificum Smith 1900 ammonite
Metaplacenticeras californicum Anderson 1902 ammonite
 Ammonitida - Baculitidae
Baculites chicoensis Trask 1856 ammonite
Gastropoda
 Trochoidea - Turbinidae
"Margarites ornatissima" = Atira ornatissima
"Margarites ornatissima" = Atira ornatissima Gabb 1864 snail
 Sorbeoconcha - Aporrhaidae
Anchura phaba1, "Lispodesthes rotundus" = Lispodesthes rotundatus5
Anchura phaba1 Elder and Saul 1996 snail
"Lispodesthes rotundus" = Lispodesthes rotundatus5 Waring 1917 snail
 Neogastropoda - Melongenidae
"Fulgur hilgardi" = Pentzia hilgardi
"Fulgur hilgardi" = Pentzia hilgardi White 1889 snail
 Neogastropoda - Perissityidae
Perissitys pacifica2 Popenoe and Saul 1987 snail
 Neogastropoda - Volutidae
Volutoderma blakei6 Saul and Squires 2008 volute
Volutoderma elderi6 Saul and Squires 2008 volute
Volutoderma averillii Gabb 1864 volute
Volutoderma santana Packard 1922 volute
 Sorbeoconcha - Naticidae
? Euspira sp. Agassiz 1837 moon snail
Gyrodes (Sohlella) pacificus3 Popenoe et al. 1987 moon snail
 Heterostropha - Acteonidae
"Actaeon normalis" = Acteon
"Actaeon normalis" = Acteon snail
 Heterostropha - Ringiculidae
"Oligoptycha obliqua" = Biplica obliqua
"Oligoptycha obliqua" = Biplica obliqua Gabb 1864 snail
 Heterostropha - Pyramidellidae
Odostomia santana Packard 1922 snail
 Opisthobranchia - Cylichnidae
"Cylichna cf. costata" = Scaphander (Mirascapha) costatus
"Cylichna cf. costata" = Scaphander (Mirascapha) costatus Gabb 1864 snail
Bivalvia
 Arcida - Arcidae
Trinacria cor n. sp. Popenoe 1937 clam
 Arcida - Cucullaeidae
"Cucullaea youngi" = Cucullaea (Idonearca) youngi
"Cucullaea youngi" = Cucullaea (Idonearca) youngi Waring 1917 clam
 Arcida - Glycymerididae
"Glycymeris veatchii" = Glycymerita veatchii7
"Glycymeris veatchii" = Glycymerita veatchii7 Gabb 1864 clam
as Glycymeris veatchii var. anae
 Mytilida - Mytilidae
Brachidontes bifurcatus n. sp. Popenoe 1937 mussel
 Lucinida - Mactromyidae
Clisocolus cordatus Whiteaves 1879 clam
Clisocolus dubius5 Gabb 1864 clam
 Pholadida - Pholadidae
Martesia ? clausa Gabb 1864 clam
 Cardiida - Veneridae
Legumen ooides, "Flaventia lens" = Paraesa lens, "Trigonocallista bowersiana" = Calva (Egelicalva) bowersiana
Legumen ooides Gabb 1864 venus clam
"Flaventia lens" = Paraesa lens Gabb 1864 venus clam
"Trigonocallista bowersiana" = Calva (Egelicalva) bowersiana Cooper 1894 venus clam
 Cardiida - Mactridae
Cymbophora ashburnerii5 Gabb 1864 clam
Cymbophora popenoei n. sp.5 Saul 1974 clam
Cymbophora stantoni4 Arnold 1908 clam
 Trigoniida - Megatrigonioidae
"Trigonia cf. evansana" = Pterotrigonia evansana
"Trigonia cf. evansana" = Pterotrigonia evansana Meek 1864 clam
 Nuculida - Nuculidae
"Acila demessa" = Acila (Truncacila) demessa
"Acila demessa" = Acila (Truncacila) demessa Finlay 1927 divaricate nutclam
 Nuculanida - Nuculanidae
"Lembulus striatula" = Leda striatula
"Lembulus striatula" = Leda striatula Forbes 1846 pointed nut clam
Scaphopoda
  -
Dentalium whiteavesi Anderson and Hanna 1935 tusk shell