Where: Cajamarca, Peru (6.6° S, 78.7° W: paleocoordinates 12.1° S, 50.7° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Chulec Formation, Albian (113.0 - 100.5 Ma)
• Collection from a 255 m thick marl unit, lying below the Pariatambo Formation (late middle Albian) and above the Inca Formation (lower Albian). The Chulec Formation varies in thickness significantly through the regions, ranging from 25 to 500 m in thickness. The formation does appear to have a diachronous base, and in places ranges from Aptian to early Albian at its base, but in most places the formation is considered to fall completely within the middle Albian.
• group of beds-level stratigraphic resolution
Environment/lithology: lithified, shelly/skeletal, gray, argillaceous marl and lithified, shelly/skeletal, brown, gray limestone
Size class: macrofossils
Reposited in the AMNH
Collection methods: quarrying,
• Collections reposited at AMNH.
Primary reference: V.E. Benavides-Caceres. 1956. Cretaceous system in northern Peru. Bulletin of the American Museum of Natural History 108(4):1-493 [A. Miller/A. Hendy]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 56908: authorized by Austin Hendy, entered by Austin Hendy on 28.11.2005
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
Knemiceras sp. Böhm 1898 ammonite |