UCMP B-6554 (Pleistocene of Mexico)

Also known as SDMNH 0643

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 and E.P. Chase in 1957; reposited in the SDSM, UCMP

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 194399: authorized by Patricia Holroyd, entered by Emily Orzechowski on 19.06.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Gastropoda
 Lepetellida - Haliotidae
Anthozoa
 Scleractinia - Pocilloporidae
Pocillopora guadalupensis n. sp. Durham 1980 stony coral
Gastropoda
 Patellida - Lottiidae
"Collisella limatula" = Lottia limatula, "Collisella digitalis" = Lottia digitalis
"Collisella limatula" = Lottia limatula Carpenter 1864 limpet
"Collisella digitalis" = Lottia digitalis Eschscholtz 1833 limpet
 Lepetellida - Fissurellidae
Fissurella volcano Reeve 1849 snail
 Trochoidea - Tegulidae
"Tegula eiseni" = Agathistoma eiseni, "Norrisia norrisi" = Norrisia norrisii
"Tegula eiseni" = Agathistoma eiseni Jordan 1936 snail
"Norrisia norrisi" = Norrisia norrisii Sowerby I 1838 snail
 Sorbeoconcha - Littorinidae
"Littorina keenae" = Littorina (Neritrema) keenae
"Littorina keenae" = Littorina (Neritrema) keenae Rosewater 1978 periwinkle
 Sorbeoconcha - Cypraeidae
"cf. Cypraea cernica" = Erosaria cernica
"cf. Cypraea cernica" = Erosaria cernica Sowerby 1870 cowry
 Sorbeoconcha - Bursidae
"Bursa californica" = Crossata ventricosa
"Bursa californica" = Crossata ventricosa Broderip 1833 frog shell
 Neogastropoda - Muricidae
"Morula lugubris" = Mexacanthina lugubris
"Morula lugubris" = Mexacanthina lugubris Sowerby I 1822 murex snail
 Neogastropoda - Conidae
"Conus californicus" = Californiconus californicus Reeve 1844 cone shell
Conus purpurascens cone shell
Conus fergusoni Sowerby 1875 cone shell
Bivalvia
 Lucinida - Lucinidae
"Ctena mexicana" = Ctena (Ctena) mexicana
"Ctena mexicana" = Ctena (Ctena) mexicana Dall 1901 clam
 Cardiida - Chamidae
Chama squamuligera Pilsbry and Lowe 1932 jewel box