UCMP A-9594, Punta Santo Tomas (Pleistocene of Mexico)

Where: Mexico (31.6° N, 116.7° W: paleocoordinates 31.6° N, 116.7° W)

• coordinate estimated from map

• outcrop-level geographic resolution

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

• Fossils from stratum about 5 feet in thickness, at an estimated 20 feet above sea level, overlying white, plutonic rock.

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; poorly lithified, sandy conglomerate

• Very well indurated, sandy conglomerate

Size class: macrofossils

Collected by W.O. Addicott in 1952; 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 226464: authorized by Matthew Clapham, entered by Matthew Clapham on 09.07.2022

Creative Commons license: CC BY (attribution)

Taxonomic list

Echinoidea
 Camarodonta - Strongylocentrotidae
Strongylocentrotus cf. purpuratus Stimpson 1857 sea urchin
Gastropoda
 Neotaenioglossa - Calyptraeidae
"Crepidula lingulata" = Crepipatella lingulata
"Crepidula lingulata" = Crepipatella lingulata Gould 1846 slipper shell
 Neogastropoda - Conidae
"Conus californicus" = Californiconus californicus
"Conus californicus" = Californiconus californicus Reeve 1844 cone shell
 Neogastropoda - Columbellidae
Amphissa versicolor Dall 1871 snail
 Patellida - Lottiidae
"Acmaea insessa" = Lottia insessa
"Acmaea insessa" = Lottia insessa Hinds 1842 limpet
 Lepetellida - Haliotidae
Haliotis corrugata, "Haliotis ? cracherodi" = Haliotis cracherodii
Haliotis corrugata Gray 1828 abalone
"Haliotis ? cracherodi" = Haliotis cracherodii Leach 1814 abalone
 Lepetellida - Fissurellidae
Fissurella volcano Reeve 1849 snail
 Trochoidea - Tegulidae
"Norrisia norrisi" = Norrisia norrisii
"Norrisia norrisi" = Norrisia norrisii Sowerby I 1838 snail
 Trochoidea - Trochidae
Calliostoma ligatum Gould 1849 top snail
 Trochoidea - Phasianellidae
"Phasianella compta" = Eulithidium comptum
"Phasianella compta" = Eulithidium comptum Gould 1855 snail
 Trochoidea - Turbinidae
"Homalopoma carpenteri" = Homalopoma (Homalopoma) luridum
"Homalopoma carpenteri" = Homalopoma (Homalopoma) luridum Dall 1885 snail
Bivalvia
 Cardiida - Chamidae
Chama pellucida Broderip 1835 jewel box
 Lucinida - Lucinidae
"Lucina californica" = Epilucina californica
"Lucina californica" = Epilucina californica Conrad 1837 clam
 Mytilida - Mytilidae
Mytilus californianus Conrad 1837 mussel
Thecostraca
 Balanomorpha - Tetraclitidae
Tetraclita rubescens Darwin 1854 barnacle
Tetraclita squamosa rubescens
 Balanomorpha - Balanidae
"Balanus cf. californicus" = Balanus tintinnabulum californicus
"Balanus cf. californicus" = Balanus tintinnabulum californicus Pilsbry 1916 barnacle
Balanus cf. B. tintinnabulum californicus