Where: Neuquen, Argentina (39.0° S, 70.0° W: paleocoordinates 36.2° S, 31.5° W)

• coordinate estimated from map

When: Patagoniense ammonoid zone, Lotena Formation, Late/Upper Callovian (164.7 - 161.2 Ma)

Environment/lithology: gypsiferous, gray, green, carbonaceous sandstone and claystone

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 135715: authorized by John Alroy, entered by Julieta Martinelli on 05.11.2012

Creative Commons license: CC BY (attribution)