U.C.L.A. Loc. 5786, Elsmere Canyon [Towsley Fm] (Pliocene of the United States)

Where: Los Angeles County, California (34.4° N, 118.5° W: paleocoordinates 34.1° N, 117.2° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Towsley Formation, Early/Lower Pliocene (5.3 - 3.6 Ma)

• STRATIGRAPHIC RELATIONS: From the Towsley Fm, which unconformably overlies Eocene strata, and is overlain by the Pico Fm (Pliocene). AGE: Early Pliocene, on the basis of macrofossil biostratigraphy. STRATIGRAPHIC POSITION: From basal conglomerate in formation.

• bed-level stratigraphic resolution

Environment/lithology: coastal; poorly lithified conglomerate

• SPECIFIC LITHOLOGY: Conglomerate. LITHIFICATION: Variably lithified.

Size class: macrofossils

Collected by Kern

Collection methods: bulk, surface (in situ),

• COLLECTOR: J.P. Kern, c. 1970's. REPOSITORY: UCLA, California.

Primary reference: J. P. Kern. 1973. Early Pliocene marine climate and environment of the eastern Ventura Basin, Southern California. University of California Publications in Geological Sciences 96:1-117 [A. Hendy/A. Hendy/A. Hendy]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 97241: authorized by Austin Hendy, entered by Austin Hendy on 20.07.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for molluscs. NOMENCLATURE: An authoritative publication, with somewhat antiquated nomenclature, but with species-resolution identifications.
Gastropoda
 Neotaenioglossa - Calyptraeidae
Crepidula adunca Sowerby 1824 slipper shell
Calyptraea cf. filosa Gabb 1866 slipper shell
 Sorbeoconcha - Procerithiidae
"Bittium cf. rugatum" = Lirobittium rugatum
"Bittium cf. rugatum" = Lirobittium rugatum Carpenter 1866 snail
 Sorbeoconcha - Naticidae
"Neverita reclusiana" = Glossaulax reclusiana
"Neverita reclusiana" = Glossaulax reclusiana Deshayes 1839 moon snail
 Neogastropoda - Conidae
"Conus californicus" = Californiconus californicus
"Conus californicus" = Californiconus californicus Reeve 1844 cone shell
 Neogastropoda - Terebridae
Terebra martini English 1914 auger snail
 Neogastropoda - Olividae
"Olivella pedroana" = Callianax pedroana Conrad 1855 olive snail
Olivella aff. gracilis Broderip and Sowerby 1829 olive snail
 Neogastropoda - Nassariidae
Nassarius whitneyi Trask 1922 snail
Nassarius iniquus Stewart 1940 snail
 Neogastropoda - Columbellidae
Mitrella gausapata Gould 1850 snail
 Sorbeoconcha - Littorinidae
Littorina sp. Ferussac 1821 periwinkle
 Trochoidea - Phasianellidae
? Tricolia sp. Risso 1826 snail
 Opisthobranchia - Bullidae
Bulla cf. punctulata Adams 1850 snail
 Opisthobranchia - Cylichnidae
Acteocina aff. culcitella Gould 1853 barrel-bubble
 Patellida - Lottiidae
"Acmaea cf. digitalis" = Lottia digitalis
"Acmaea cf. digitalis" = Lottia digitalis Eschscholtz 1833 limpet
 Heterostropha - Acteonidae
"Acteon punctocaelatus" = Rictaxis punctocaelatus
"Acteon punctocaelatus" = Rictaxis punctocaelatus Carpenter 1864 snail
Bivalvia
 Arcida - Arcidae
"Barbatia cf. bailyi" = Acar bailyi
"Barbatia cf. bailyi" = Acar bailyi Bartsch 1931 miniature ark
 Lucinida - Lucinidae
"Lucinisca nuttallii" = Lucinisca nuttalli, Miltha xantusi
"Lucinisca nuttallii" = Lucinisca nuttalli Conrad 1837 clam
Miltha xantusi Dall 1903 clam
 Pholadida - Myidae
Cryptomya californica Conrad 1837 softshell clam
 Cardiida - Tellinidae
Macoma nasuta, "Macoma indentata" = Macoma (Rexithaerus) indentata, "Tellina idae" = Idatellina idae
Macoma nasuta Conrad 1837 tellin clam
"Macoma indentata" = Macoma (Rexithaerus) indentata Carpenter 1864 tellin clam
"Tellina idae" = Idatellina idae Dall 1891 tellin clam
 Cardiida - Veneridae
"Tivela stultorum" = Tivela (Pachydesma) stultorum Mawe 1823 venus clam
Amiantis callosa Conrad 1837 venus clam
 Cardiida - Mactridae
"Mactra cf. dolabriformis" = Simomactra dolabriformis
"Mactra cf. dolabriformis" = Simomactra dolabriformis Conrad 1867 clam
 Solenida - Solenidae
Solen sicarius Gould 1850 clam
 Thraciida - Periplomatidae
"Periploma planiuscula" = Periploma (Periploma) planiuscula
"Periploma planiuscula" = Periploma (Periploma) planiuscula Sowerby I 1834 clam
Scaphopoda
 Dentaliida - Rhabdidae
"Dentalium cf. rectius" = Rhabdus rectius
"Dentalium cf. rectius" = Rhabdus rectius Carpenter 1864 tusk shell