Negritos [Salina Fm] (Eocene of Peru)

Where: Piura, Peru (4.7° S, 81.3° W: paleocoordinates 13.4° S, 110.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Salina Formation (Salina Group), Lutetian (47.8 - 41.3 Ma)

• LITHOSTRATIGRAPHY: From the Salina Fm of the Salina Gp, which regionally overlies the Negritos Fm (Early Eocene). AGE: Regarded as early Middle Eocene (p. 9) = Lutetian, on the basis of molluscan biostratigraphy. STRATIGRAPHIC POSITION: From unknown position within formation.

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; poorly lithified, conglomeratic sandstone

• ENVIRONMENT: Shelfal siliciclastic environment.
• LITHOLOGY: Conglomeratic sandstone. LITHIFICATION: Poorly lithified, on the basis of figured specimens.

Size class: macrofossils

Collected by Olsson; reposited in the PRI

Collection methods: surface (in situ),

• COLLECTOR: Not stated, but presumably A. Olsson. REPOSITORY: Not stated, but presumably PRI

Primary reference: A. A. Olsson. 1928. Contributions to the Tertiary paleontology of northern Peru: Part 1. Bulletins of American Paleontology 14(52) [A. Miller/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 88369: authorized by Austin Hendy, entered by Austin Hendy on 09.04.2009, edited by Kristina Okamoto

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for bivalves, gastropods, and brachiopods. NOMENCLATURE: Authoritative publication, but with somewhat antiquated nomenclature.
Bivalvia
 Carditida - Carditidae
"Venericardia peruviana n. sp." = Venericardia (Venericor) peruviana, "Venericardia pacifica n. sp." = Venericardia (Venericor) pacifica
"Venericardia peruviana n. sp." = Venericardia (Venericor) peruviana Olsson 1928 clam
"Venericardia pacifica n. sp." = Venericardia (Venericor) pacifica Olsson 1928 clam
 Cardiida - Ungulinidae
? Diplodonta dissona n. sp. Olsson 1928 clam
 Cardiida - Veneridae
Callocardia salvia n. sp. Olsson 1928 venus clam
 Cardiida - Donacidae
Donax (Latona) capparis n. sp. Olsson 1928 clam
Gastropoda
 Neogastropoda - Buccinidae
Pseudoliva mutabilis Woods 1922 true whelk
SUBSPECIES: Pseudoliva mutabilis woodsi
 Sorbeoconcha - Turritellidae
Turritella hopkinsi n. sp. Olsson 1928 turret shell
Cephalopoda
 Nautilida - Hercoglossidae
Aturoidea olssoni n. sp. Miller 1947 nautiloid
 Nautilida - Aturiidae
Aturia cf. ziczac Sowerby 1812 nautiloid