Cerro La Parva (Cretaceous of Argentina)

Where: Argentina (37.4° S, 70.3° W: paleocoordinates 36.7° S, 33.7° W)

• outcrop-level geographic resolution

When: Valanginian (139.8 - 132.9 Ma)

• upper beds (although the lower beds also have fossils)

• bed-level stratigraphic resolution

Environment/lithology: marine; shelly/skeletal, silty shale and limestone

• hard, shelly, silty shales and dark shales with thin platy limestones

Size class: macrofossils

Primary reference: M. B. Aguirre-Urreta and P. F. Rawson. 1999. Lower Cretaceous ammonites from the Neuquen Basin, Argentina: Viluceras, a new Valanginian subgenus of Olcostephanus. Cretaceous Research 20:343-357 [J. Alroy/E. Leckey/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 37333: authorized by John Alroy, entered by Erin Leckey on 11.03.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

 Ammonitida - Olcostephanidae
Olcostephanus permolestus Leanza 1958 ammonite
 Ammonoidea -