Where: Argentina (38.7° S, 69.9° W: paleocoordinates 38.2° S, 33.7° 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 shale and lithified siltstone
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 61715: authorized by Wolfgang Kiessling, entered by Uta Merkel on 23.06.2006
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
"Holcostephanus leanzai n. sp." = Olcostephanus (Olcostephanus) laticosta
"Holcostephanus leanzai n. sp." = Olcostephanus (Olcostephanus) laticosta Gerth 1925 ammonite |