Where: Cajamarca, Peru (7.2° S, 78.5° W: paleocoordinates 8.2° S, 45.6° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Carhuaz Formation, Hauterivian to Hauterivian (132.9 - 125.0 Ma)

• Collection from a 18 m thick siltstone unit, lying below the Goyllarisquisga Formation (late Barremian-Aptian) and 33 m above the base of the section. The Carhuaz Formation is 556 m thick at this section. The formation was originally placed within the Barremian by Steinmann (1930) athough the present author suggests it has a broader temporal range, spanning the late Valanginian-Aptian in places. The fossiliferous part of the formation largely appears to be late Valanginian to early Hauterivian. The section includes the types of the Inca, Yumugual, Mujuarrun, Romiron, Conor, and Cajamarca formations.

• group of beds-level stratigraphic resolution

Environment/lithology: marginal marine; lithified, shelly/skeletal, brown, calcareous siltstone and carbonaceous shale

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 56939: authorized by Austin Hendy, entered by Austin Hendy on 29.11.2005

Creative Commons license: CC BY (attribution)