Where: Neuquen, Argentina (37.0° S, 70.5° W: paleocoordinates 34.3° S, 32.5° W)

• coordinate estimated from map

When: Proximum ammonoid zone, Los Molles Formation, Early/Lower Callovian (164.7 - 161.2 Ma)

Environment/lithology: marginal marine; sandy siltstone

Size class: macrofossils

Preservation: mold/impression

Primary reference: H. Parent. 2006. Oxfordian and late Callovian ammonite faunas and biostratigraphy of the Neuquen-Mendoza and Tarapaca Basins (Jurassic, Ammonoidea, Western South-America). Boletin del Instituto de Fisiografia y Geologia 76(1-2):1-70 [J. Alroy/J. Martinelli]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 135722: authorized by John Alroy, entered by Julieta Martinelli on 05.11.2012

Creative Commons license: CC BY (attribution)