Arroyo Delphin (Miocene of Mexico)

Also known as UCR RV-7315

Where: Baja California, Mexico (28.4° N, 115.2° W: paleocoordinates 27.0° N, 111.7° W)

• outcrop-level geographic resolution

When: lower Member (Almejas Formation), Messinian (7.2 - 5.3 Ma)

• An ochre-yellow sand designated as unit O in Richard H. Tedford's field notes of 1965. Horizon is about 6 feet stratigraphically below the first and lowest prominent pebble conglomerate in the Almejas Formation exposed at locality UCR RV-7315.

• formation-level stratigraphic resolution

Environment/lithology: coastal; poorly lithified, yellow sandstone and pebbly conglomerate

• an ocre-yellow sand

Size class: macrofossils

Preservation: original phosphate

Collection methods: quarrying, surface (in situ), mechanical,

Primary reference: L. G. Barnes. 1973. Praekogia cedrosensis, a new genus and species of fossil pygymy sperm whale from Isla Cedros Baja California, Mexico. Contributions in Science, Natural History Museum of Los Angeles County 247:1-20 [M. Uhen/M. Uhen/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 13090: authorized by Mark Uhen, entered by Mark Uhen on 21.01.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

 Charadriiformes - Panalcidae
Mancalla sp. Lucas 1901 auk
 Phoenicopteriformes - Palaelodidae
? Megapaloelodus opsigonus Brodkorb 1961 flamingo
 Odontoceti - Kogiidae
Praekogia cedrosensis n. gen. n. sp.
Praekogia cedrosensis n. gen. n. sp. Barnes 1973 pygmy sperm whale