Chacay Melehue 3 (Jurassic of Argentina)

Where: Neuquen, Argentina (37.0° S, 70.5° W: paleocoordinates 34.3° S, 32.7° W)

• coordinate estimated from map

When: Patagoniense ammonoid zone, Lotena Formation, Early/Lower Oxfordian (161.2 - 155.7 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 135724: authorized by John Alroy, entered by Julieta Martinelli on 05.11.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

 Ammonitida - Oppeliidae
Hecticoceras lairense Waagen 1875 ammonite
 Ammonitida - Perisphinctidae
Perisphinctes hillebrandti Parent 2006 ammonite
sp nov.
 Ammonitida - Aspidoceratidae
"Peltoceras athleta" = Peltoceras (Peltoceras) athleta
"Peltoceras athleta" = Peltoceras (Peltoceras) athleta Phillips 1829 ammonite