Bed 23, Pomachaca section (Cretaceous of Peru)

Where: Peru (9.4° S, 77.1° W: paleocoordinates 14.9° S, 49.1° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Chulec Formation, Middle Albian (109.0 - 105.3 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: lithified, nodular, shelly/skeletal, gray marl

• Marl, light gray, nodular, very fossiliferous

Size class: macrofossils

Collected by V.E. Benavides; reposited in the AMNH

Collection methods: surface (in situ),

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 158988: authorized by Matthew Clapham, entered by Matthew Clapham on 24.07.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ammonitida - Douvilleiceratidae
Douvilleiceras monile Sowerby 1816 ammonite
 Ammonitida - Knemiceratidae
"Knemiceras attenuatum" = Glottoceras attenuatum, "Knemiceras raimondii" = Glottoceras raimondii
"Knemiceras attenuatum" = Glottoceras attenuatum Hyatt 1875 ammonite
includes ssp. spinosum
"Knemiceras raimondii" = Glottoceras raimondii Lisson 1908 ammonite