Red Cinder Cone point, Isla de Guadalupe (Pleistocene of Mexico)

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

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

• The formation is interpreted as of Sangamon Interglacial age because two samples have been isotope dated at about 110,000 and 130,000 yr. BP, and because of the large representation of tropical marine invertebrates: a tropical coral of the genus Pocillopora comprises the bulk of the fossils and there are several tropical gastropods that are likewise now confined to the warm waters from near the mouth of the Gulf of California to northern Peru.

• bed-level stratigraphic resolution

Environment/lithology: peritidal; lithified limestone

• These fossils occur in a calcareous matrix that has more or less firmly cemented the fine to very coarse debris that had fallen down the precipitous cliffs, in large part after the material had been reworked by the moderate wave action of this coastline.

Size class: macrofossils

Collected by C.L. Hubbs, J.R. Jehl, R.L. Wisner, R.R. McConnaughy in 1970

• Repository: San Diego Natural History Museum

Primary reference: C. L. Hubbs and J. R. Jehl. 1976. Remains of Pleistocene birds from Isla de Guadalupe, Mexico. The Condor 78:421-422 [M. Clapham/M. Clapham]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 192635: authorized by Matthew Clapham, entered by Matthew Clapham on 15.04.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Aves
 Procellariiformes - Procellariidae
Puffinus cf. opisthomelas Coues 1864 black-vented shearwater
Puffinus cf. puffinus opisthomelas
 Charadriiformes - Alcoidae
"Endomychura cf. hypoleuca" = Synthliboramphus hypoleucus
"Endomychura cf. hypoleuca" = Synthliboramphus hypoleucus Xantas 1860 Guadalupe murrelet