ammonites
Estancia "Anita", Río Leona (MACN) (Cretaceous of Argentina)

Where: Santa Cruz, Argentina (50.3° S, 72.3° W: paleocoordinates 52.3° S, 62.1° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Chorillo Formation, Maastrichtian (70.6 - 65.5 Ma)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; gray, green claystone

• "grey and greenish grey clays, with dark and purple bands alternating with generally friable beds."

Size class: macrofossils

Collected by G. F. Nullo & J. F. Bonaparte; reposited in the MACN

• discovered by General F. Nullo

Primary reference: J. E. Powell. 2003. Revision of South American titanosaurid dinosaurs: palaeobiological, palaeobiogeographical and phylogenetic aspects. Records of the Queen Victoria Museum Launceston 111:1-173 [M. Carrano/M. Carrano/M. Carrano] more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 51623: authorized by Matt Carrano, entered by Matt Carrano on 09.06.2005