Caldera, Bahia Inglesa Unit 1 (Miocene of Chile)

Where: Atacama, Chile (27.1° S, 70.9° W: paleocoordinates 27.4° S, 68.8° W)

• coordinate stated in text

• local area-level geographic resolution

When: Unit 1 Member (Bahia Inglesa Formation), Late/Upper Miocene (11.6 - 5.3 Ma)

• Rojo 1985 regarded the bed as Miocene

•Walsh and Naish 2002 uses Diatoms to state that it spans the Miocene-Pliocene boundary and extends as far as the middle Pliocene.

Environment/lithology: lagoonal or restricted shallow subtidal; coarse-grained conglomerate

• lagoonal/restricted shallow subtidal, submarine canyon, upper continental slope to outer shelf
• coarse, conglomeratic

Size class: macrofossils

Preservation: original phosphate

Primary reference: S. Walsh and D. Naish. 2002. Fossil seals from late Neogene deposits in South America: A new pinniped (Carnivora, Mammalia) assemblage from Chile. Palaeontology 45(4):821-842 [M. Uhen/M. Uhen]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 80365: authorized by Mark Uhen, entered by Mark Uhen on 15.04.2008, edited by Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

Actinopteri
 Istiophoriformes - Istiophoridae
Aves
 Sphenisciformes - Spheniscidae
Spheniscidae indet. Bonaparte 1831 penguin
Reptilia
 Loricata -
Crocodyliformes indet.2 Hay 1930 crocodilian
SGO−PV−834 (right dentary fragment)
Mammalia
 Carnivora - Phocidae
Acrophoca sp. Muizon 1981 seal
 Cetacea - Balaenopteridae
Balaenoptera sp.1 Lacépède 1804 rorqual
 Cetacea -
Odontoceti indet. Flower 1867 toothed whale
 Cetacea - Kogiidae
Kogiidae indet.1 Miller 1923 pygmy sperm whale
 Cetacea - Phocoenidae
Phocoenidae indet.1 Gray 1825 porpoise
 Cetacea - Pontoporiidae
Brachydelphis sp.1 Muizon 1988 toothed whale
juvenile
Pliopontos sp.1 Muizon 1983 toothed whale
Pontistes sp.1 Burmeister 1885 toothed whale