UCMP A-9593, north of Punta China (Pleistocene of Mexico)

Where: Mexico (31.5° N, 116.6° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Late/Upper Pleistocene (0.1 - 0.0 Ma)

• Fossils from basal 3-4-foot stratum, at an estimated elevation of from 20 to 25 feet above sea level, resting on upper Cretaceous rocks and overlain by unfossiliferous gravel and reddish soil.

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; poorly lithified, sandy gravel

• Reddish weathering, sandy gravel

Size class: macrofossils

Collected by J.W. Durham, W.K. Emerson in 1953; reposited in the UCMP

Primary reference: W. K. Emerson. 1956. Pleistocene invertebrates from Punta China, Baja California, Mexico, with remarks on the composition of the Pacific coast Quaternary faunas. Bulletin of the American Museum of Natural History 111:313-342 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 226465: authorized by Matthew Clapham, entered by Matthew Clapham on 09.07.2022

Creative Commons license: CC0 (CC0)

Taxonomic list

Bivalvia
 Cardiida - Semelidae
Cumingia californica Conrad 1837 clam
 Lucinida - Lucinidae
"Lucina californica" = Epilucina californica
"Lucina californica" = Epilucina californica Conrad 1837 clam
Gastropoda
 Patellida - Lottiidae
"Acmaea scabra" = Lottia scabra, "Acmaea digitalis" = Lottia digitalis, "Acmaea insessa" = Lottia insessa
"Acmaea scabra" = Lottia scabra Gould 1846 limpet
"Acmaea digitalis" = Lottia digitalis Eschscholtz 1833 limpet
"Acmaea insessa" = Lottia insessa Hinds 1842 limpet
 Sorbeoconcha - Littorinidae
"Littorina scutulata" = Littorina (Littorina) scutulata
"Littorina scutulata" = Littorina (Littorina) scutulata Gould 1849 periwinkle
 Sorbeoconcha - Hipponicidae
Hipponix tumens Carpenter 1864 hoof shell
 Neogastropoda - Mitridae
"Mitra idae" = Mitra (Atrimitra) idae
"Mitra idae" = Mitra (Atrimitra) idae Melville 1893 mitre shell
 Neogastropoda - Olividae
"Olivella biplicata" = Callianax biplicata
"Olivella biplicata" = Callianax biplicata Sowerby 1825 olive snail
 Cerithioidea - Turritellidae
Turritella cf. cooperi Carpenter 1864 turret shell
 Trochoidea - Trochidae
"Tegula funebralis" = Chlorostoma funebrale
"Tegula funebralis" = Chlorostoma funebrale Adams 1855 top snail