Bed 51, Section 3 - Hualgayoc [Cajamarca Fm] (Cretaceous of Peru)

Where: Peru (6.8° S, 78.6° W: paleocoordinates 12.5° S, 55.6° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Cajamarca Formation, Late/Upper Turonian (93.5 - 89.3 Ma)

• LITHOSTRATIGRAPHY: From the Cajamarca Fm, which is locally overlain by the Celendín Fm (Coniacian). AGE: middle to Late Turonian, on the basis of ammonite biostratigraphy; Coilopoceras newelli zone. STRATIGRAPHIC POSITION: Collection from 43 m thick limestone unit, near the top of the section.

• bed-level stratigraphic resolution

Environment/lithology: coastal; lithified, nodular, gray, blue, calcareous shale

• LITHOLOGY: Limestone, argillaceous, dark bluish gray, somewhat nodular, fossiliferous. LITHIFICATION: Lithified, on the basis of facies description.

Size class: macrofossils

Collected by Benavides; reposited in the AMNH

Collection methods: surface (in situ),

• COLLECTOR: V. E. Benavides. REPOSITORY: 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 88136: authorized by Austin Hendy, entered by Austin Hendy on 01.04.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Probably not exhaustive, but representative for ammonoids, bivalves, and other invertebrates groups. NOMENCLATURE: Authoritative publication, but with somewhat antiquated nomenclature, and species-resolution identifications.
Show authors, comments, and common names
Bivalvia
 Myalinida - Inoceramidae
Inoceramus sp.
Inoceramus sp. Sowerby 1814 clam
 Ostreida - Ostreidae
Ostrea sp.
Ostrea sp. Linnaeus 1758 oyster