Where: Argentina (49.5° S, 68.4° W: paleocoordinates 50.3° S, 61.8° W)

• coordinate estimated from map

When: Monte Leon Formation, Aquitanian to Aquitanian (23.0 - 16.0 Ma)

• Age after Parras et al 2008

• formation-level stratigraphic resolution

Environment/lithology: marginal marine; tuffaceous, gray siltstone and tuffaceous, gray sandstone

Size class: macrofossils

Preservation: original phosphate

Primary reference: A. L. Cione and M. A. Cozzuol. 1990. Reidentification of Portheus patagonicus Ameghino, 1901, a supposed fish from the Middle Tertiary of Patagonia as a delphinoid cetacean. Journal of Paleontology 64(3):451-453 [M. Uhen/M. Uhen/J. Alroy] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 45887: authorized by Mark Uhen, entered by Mark Uhen on 12.12.2004

Creative Commons license: CC BY (attribution)