SDMNH 2470 (Pleistocene of Mexico)

Where: Baja California, Mexico (29.0° N, 118.2° W: paleocoordinates 29.0° N, 118.2° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Discovery Point Formation, Late/Upper Pleistocene (0.1 - 0.0 Ma)

• 127-117 ka age (Marine Isotope Substage 5e) for corals that were directly dated from localities SDMNH 0633 (UCMP D1547), 0644, and 2465 (Muhs 1994); dates are inferred to apply to the rest of the Discovery Point Formation.

• group of beds-level stratigraphic resolution

Environment/lithology: perireef or subreef; lithified conglomerate and limestone

• Discovery Point Formation: coarsely clastic sediments that grade laterally from conglomerate, locally with pebbles of volcanic origin, to a biostrome formed chiefly of coral fragments and mollusk shells.

Size classes: macrofossils, microfossils

Collected by C.L. Hubbs in 1967; reposited in the SDSM

Primary reference: D. R. Lindberg, B. Roth, M. G. Kellogg and C. L. Hubbs. 1980. Invertebrate megafossils of Pleistocene (Sangamon Interglacial) age from Isla de Guadalupe, Baja California, Mexico. In D. M. Power (ed.), The California Islands: Proceedings of a Multidisciplinary Symposium 41-70 [W. Kiessling/U. Merkel/P. Wagner]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 194429: authorized by Patricia Holroyd, entered by Emily Orzechowski on 19.06.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Thecostraca
 Balanomorpha - Tetraclitidae
Malacostraca
 Decapoda - Pinnotheridae
Pinnixa sp. White 1846 crab
 Decapoda - Xanthidae
Xanthidae indet. MacLeay 1838 stone crab
 Decapoda - Paguridae
Paguridae indet. Latreille 1802 hermit crab
 Decapoda - Porcellanidae
Gastropoda
 Heterostropha - Ellobiidae
 Sorbeoconcha - Truncatellidae
 Trochoidea - Tegulidae
"Tegula eiseni" = Agathistoma eiseni
"Tegula eiseni" = Agathistoma eiseni Jordan 1936 snail
Echinoidea
 Cidaroida - Cidaridae
"Eucidaris thouarsii" = Cidaris thouarsii
"Eucidaris thouarsii" = Cidaris thouarsii Valencienncs 1846 pencil urchin
Anthozoa
 Scleractinia - Pocilloporidae
Pocillopora guadalupensis Durham 1980 stony coral