Bed 9b, Tamberia Oeste [Inca Fm] (Cretaceous of Peru)

Where: Cajamarca, Peru (7.5° S, 78.2° W: paleocoordinates 11.7° S, 48.7° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Inca Formation, Early/Lower Albian (112.0 - 109.0 Ma)

• STRATIGRAPHIC RELATIONS: From the Inca Fm, which locally overlies the Farrat Fm. AGE: Early Albian, on the basis of ammonite biostratigraphy; Neodeshayesites umbilicostatus zone. STRATIGRAPHIC POSITION: From sample 9b, near middle of section.

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified limestone

• SPECIFIC LITHOLOGY: Limestone. LITHIFICATION: Lithified, on the basis of figured specimens.

Size class: macrofossils

Preservation: mold/impression

Collected by Robert

Collection methods: surface (float),

• COLLECTOR: E. Robert, 1995-1999. REPOSITORY: ISEM

Primary reference: E. Robert and L. G. Bulot. 2005. Albian ammonite faunas from Peru: The genus Neodeshaesites Casey, 1964. Journal of Paleontology 79(3):611-618 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 88516: authorized by Austin Hendy, entered by Austin Hendy on 13.04.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for ammonoidea. NOMENCLATURE: Authoritative publication, with modern nomenclature and species-resolution identification.
 Trigoniida - Megatrigonioidae
"Scabrotrigonia scabra" = Pterotrigonia (Scabrotrigonia) scabra
"Scabrotrigonia scabra" = Pterotrigonia (Scabrotrigonia) scabra Lamarck 1819 clam
 Ostreida - Gryphaeidae
 Ammonitida - Hamitidae
Hamites sp. Parkinson 1811 ammonite
 Ammonitida - Douvilleiceratidae
 Ammonitida - Knemiceratidae
Platiknemiceras sp. Bataller 1954 ammonite
 Ammonitida - Parahoplitidae
Neodeshayesites sp. Casey 1964 ammonite
Neodeshayesites inti Benavides-Caceres 1956 ammonite
"Neodeshayesites umbilicostatus" = Immunitoceras umbilicostatus Scott 1940 ammonite
 Ammonitida - Beudanticeratidae
"Beudanticeras" sp. Hitzell 1902 ammonite
 Spatangoida - Toxasteridae
Heteraster sp. heart urchin