Bed 53, Section 4 - Celendín [Coñor Fm] (Cretaceous of Peru)

Where: Cajamarca, Peru (6.9° S, 78.2° W: paleocoordinates 12.8° S, 54.9° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Coilopoceras jenksi ammonoid zone, Coñor Formation, Turonian (93.9 - 89.8 Ma)

• LITHOSTRATIGRAPHY: From the Coñor Fm, which locally overlies the Romirón Fm (Late Cenomanian). AGE: Turonian, on the basis of ammonite biostratigraphy; Coilopoceras jenksi zone. STRATIGRAPHIC POSITION: Collection from unit 53, a 52 m thick limestone unit, near middle of section.

• bed-level stratigraphic resolution

Environment/lithology: lithified, nodular, gray, white, argillaceous limestone

• LITHOLOGY: Limestone, argillaceous, light gray, nodular, weathers whitish gray. 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 88157: authorized by Austin Hendy, entered by Austin Hendy on 02.04.2009

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
Echinoidea
 Spatangoida - Hemiasteridae
Hemiaster sp.
Hemiaster sp. Agassiz and Desor 1847 heart urchin
Cephalopoda
 Ammonitida - Acanthoceratidae
Mammites afer
Mammites afer Pervinquière 1907 ammonite
 Ammonitida - Coilopoceratidae
Coilopoceras jenksi
Coilopoceras jenksi Benavides-Caceres 1956 ammonite