ammonites
banner
Gateway to the Paleobiology Database
Southern cliffs (Oligocene to of Argentina)

Where: Chubut, Argentina (43.3° S, 65.5° W: paleocoordinates 43.9° S, 59.3° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Monte Leon Member (Gaiman Formation), Oligocene to Oligocene (33.9 - 5.3 Ma)

• "They are restricted to the first ten meters above the contact with sediments of continental origin bearing Colhuehuapian fauna."

• member-level stratigraphic resolution

Environment/lithology: marine; fine-grained, tuffaceous, shelly/skeletal, gray, silty sandstone

• The sediments are gray, fine grained, tuffaceous sandstones and siltstones with some oyster banks.

Size class: macrofossils

Collected by A. L. Cione, E. Tonnin, R. Brunet, and R. Taylor; reposited in the MLP

Collection methods: surface (in situ),

Primary reference: A. L. Cione. 1986. A New Megascyliorhinus (Chondrichthyes, Galeomorphii) from the Middle Tertiary of Patagonia. Journal of Vertebrate Paleontology 6(2):105-112 [S. Peters/S. McMullen] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 133690: authorized by Shanan Peters, entered by Sharon McMullen on 25.09.2012

Creative Commons license: CC BY (attribution)