CAS Loc. 850, Quebrada Mancora [Negritos Fm] (Eocene of Peru)

Also known as Arthur May Coll. 5

Where: Peru (3.7° S, 80.7° W: paleocoordinates 5.9° S, 69.8° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Negritos Formation, Early/Lower Eocene (55.8 - 48.6 Ma)

• STRATIGRAPHIC RELATIONS: Lithostratigraphic unit not stated in text; possibly from Negritos Fm. AGE: Not stated in text; Negritos Fm=Early Eocene. STRATIGRAPHIC POSITION: Stated in text to be from transition beds between Heath Shales and Trigal Sandstone.

• bed-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

• ENVIRONMENT: Shallow marine setting.
• SPECIFIC LITHOLOGY: Unknown. LITHIFICATION: Unknown.

Size class: macrofossils

Collected by May; reposited in the CAS

Collection methods: surface (in situ),

• COLLECTOR: A. May, C. 1910's. REPOSITORY: CAS, California

Primary reference: G. D. Hanna and M. C. Israelsky. 1925. Contributions to the Tertiary paleontology of Peru. Proceedings of the California Academy of Sciences 14(2):37-75 [A. Hendy/A. Hendy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 93759: authorized by Austin Hendy, entered by Austin Hendy on 01.02.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Comprehensive, but not exhaustive for gastropods and bivalves. NOMENCLATURE: Authoritative publication, with species-level assignments, but antiquated nomenclature.
Gastropoda
 Neogastropoda - Fasciolariidae
Clavilithes burtti n. sp. Hanna and Israelsky 1925 snail
Clavilithes pacificus Woods 1922 snail
 Neogastropoda - Volutidae
"Volutospina peruviana" = Peruluta peruviana
"Volutospina peruviana" = Peruluta peruviana Douvillé 1921 volute
 Neogastropoda - Turridae
Surcula mayi n. sp.
Surcula mayi n. sp. Hanna and Israelsky 1925 turrid
 Sorbeoconcha - Turritellidae
Turritella dickersoni Woods 1922 turret shell
Turritella conquistadorana n. sp. Hanna and Israelsky 1925 turret shell