Bajada del Agrio, Agrio Formation, O. (O.) laticosta subzone, Neuquén Basin (Cretaceous of Argentina)

Where: Argentina (38.4° S, 70.0° W: paleocoordinates 37.9° S, 33.9° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Lower Member (Agrio Formation), Early/Lower Hauterivian (136.4 - 130.0 Ma)

• Holcoptychites neuquensis zone, Olcostephanus (O.) laticosta subzone

• group of beds-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; lithified mixed carbonate-siliciclastic sediments

• shoreface to offshore paleoenvironments on a storm-dominated, shallow marine ramp
• shales, siltstones, coquinas

Size class: macrofossils

Primary reference: M. B. Aguirre-Urreta and P. F. Rawson. 2001. Lower Cretaceous ammonites from the Neuquén Basin, Argentina: a Hauterivian Olcostephanus fauna. Cretaceous Research 22(6):763-778 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 61714: authorized by Wolfgang Kiessling, entered by Uta Merkel on 23.06.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Ammonitida - Olcostephanidae
Olcostephanus (Olcostephanus) laticosta