Lagunitas [Saman Conglomerate, Saman Fm] (Eocene of Peru)

Where: Piura, Peru (4.7° S, 81.3° W: paleocoordinates 10.9° S, 107.6° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Saman Conglomerate Member (Saman Formation), Late/Upper Eocene (37.2 - 33.9 Ma)

• LITHOSTRATIGRAPHY: From the Saman Conglomerate of the Saman Fm, which regionally overlies the Restin Fm of the Parinas Gp (Middle Eocene). AGE: Late Eocene (p. 9), on the basis of molluscan biostratigraphy. Foraminifera suggest an upper Eocene age. Olsson states that the Talara and Saman rocks can be referred to the Upper Eocene and in terms of the European section, to the Bartonian and Ludian.....respectively? STRATIGRAPHIC POSITION: From unknown position within formation.

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; poorly lithified conglomerate

• ENVIRONMENT: Shelfal siliciclastic environment.
• LITHOLOGY: Conglomerate. 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 88392: authorized by Austin Hendy, entered by Austin Hendy on 10.04.2009, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for bivalves, gastropods, and brachiopods. NOMENCLATURE: Authoritative publication, but with somewhat antiquated nomenclature.
Rhynchonellata
 Terebratulida - Terebratulidae
Liothyrina peruviana n. sp. Olsson 1928
Gastropoda
 Neogastropoda - Olivellidae
"Olivancillaria (Agaronia) saxosa n. sp." = Agaronia saxosa
"Olivancillaria (Agaronia) saxosa n. sp." = Agaronia saxosa Olsson 1928 snail
 Neogastropoda - Fasciolariidae
Clavilithes woodringi n. sp. Olsson 1928 snail
Clavilithes lagunitensis n. sp. Olsson 1928 snail
Clavilithes pozoensis n. sp. Olsson 1928 snail
 Cypraeoidea - Eocypraeidae
"Cypraea (Monetaria) boggsi n. sp." = Luponovula boggsi
"Cypraea (Monetaria) boggsi n. sp." = Luponovula boggsi Olsson 1928 snail
 Tonnoidea - Cassidae
"Cassidea maccormacki n. sp." = Cassis maccormacki
"Cassidea maccormacki n. sp." = Cassis maccormacki Olsson 1928 snail
Cephalopoda
 Nautilida - Hercoglossidae
"Eutrephoceras haughti n. sp." = Deltoidonautilus haughti
"Eutrephoceras haughti n. sp." = Deltoidonautilus haughti Olsson 1928 nautiloid
 Nautilida - Aturiidae
Aturia alabamensis Morton 1834 nautiloid
Aturia alabamensis peruviana