Where: Argentina (42.5° S, 64.3° W: paleocoordinates 42.7° S, 61.6° W)
• coordinate estimated from map
• small collection-level geographic resolution
When: Puerto Madryn Formation, Tortonian (11.6 - 7.2 Ma)
• 2.5 metre thick complex coquina with erosive base at base of section. Comprises a 200 m thick sequence of coquina, cross-bedded sandstones with mud-drapes, mudstones with heterolithic lamination, and laminated or massive, totally bioturbated mudstones. The age of these deposits has been formerly recognized to be as old as Eocene and early Miocene.
• bed-level stratigraphic resolution
Environment/lithology: shallow subtidal; unlithified, shelly/skeletal, sandy mixed carbonate-siliciclastic sediments
Size class: macrofossils
Preservation: original aragonite, original calcite
Collection methods: quarrying,
• Unknown repository.
Primary reference: R.A. Scasso, J.M. McArthur, C.J. Rio, S. Martinez, and M.F. Thirlwall. 2001. 87Sr/86Sr Late Miocene age of fossil molluscs in the 'Entrerriense' of the Valdes Peninsula (Chubut, Argentina). Journal of South American Earth Sciences 14:319-329 [A. Miller/A. Hendy/A. Hendy]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 41480: authorized by Austin Hendy, entered by Austin Hendy on 15.07.2004
Creative Commons license: CC BY (attribution)