Agrio del Medio (Cretaceous of Argentina)

Where: Neuquen, Argentina (38.3° S, 70.0° W: paleocoordinates 37.9° S, 33.8° W)

• coordinate stated in text

When: Agua de la Mula Member (Agrio Formation), Late/Upper Hauterivian (136.4 - 130.0 Ma)

Environment/lithology: marine; nodular shale

Size class: macrofossils

Preservation: mold/impression

Primary reference: P. F. Rawson and M. B. Aguirre-Urreta. 2012. Lower Cretaceous ammonites from the Neuquén Basin, Argentina: The Hauterivian genus Spitidiscus. Cretaceous Research 33:97-105 [J. Alroy/J. Martinelli]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 135518: authorized by John Alroy, entered by Julieta Martinelli on 27.10.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ammonitida - Holcodiscidae
Spitidiscus riccardii Leanza and Wiedmann 1992 ammonite