Where: Santa Cruz, Argentina (51.3° S, 72.2° W: paleocoordinates 54.9° S, 56.7° W)

When: Rio Guillermo Formation, Late/Upper Cretaceous (100.5 - 66.0 Ma)

• No comments about stratigraphy.

•

•More precise dating sourced from zircon ages in Fosdick et al. 2015. Formation assumed to be Rio Guillermo.

Environment/lithology: basinal (); glauconitic sandstone

Size class: macrofossils

Collection methods: bulk,

Primary reference: O. Wilckens. 1907. Die Lamellibrachiaten, Gastropoden ect. aus der oberen Kreide Südpatagoniens. Berichte der Naturforschenden Gesellschaft zu Freiburg, Breisgau 15:97-166 [M. Clapham/J. Fearon/J. Fearon]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 235518: authorized by Matthew Clapham, entered by J Fearon on 15.07.2024

Creative Commons license: CC BY (attribution)