Punta Bravo Grits at Caleto Sal (Oligocene of Peru)

Also known as Caleta Sal

Where: Piura, Peru (5.2° S, 80.6° W: paleocoordinates 7.5° S, 74.3° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Punta Bravo Grits Member (Mancora Formation), Early/Lower Oligocene (33.9 - 28.4 Ma)

• differs from typical Mancora Fm., and so called Punta Bravo grits ; basal Oligocene according to Higley 2004; Zorritos formation of Bosworth.

Environment/lithology: marine; coarse-grained, white sandstone and coarse-grained conglomerate

• less marine than typical Mancora Fm, some brackish indicators, but also marine incursions
• coarse white grits, colored or variegated shales and coarse conglomerates

Size class: macrofossils

Primary reference: A. A. Olsson. 1931. Contributions to the Tertiary Paleontology of Northern Peru: Part 4, The Peruvian Oligocene. Bulletins of American Paleontology 17(63) [L. Ivany/L. Ivany]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 55433: authorized by Linda Ivany, entered by Linda Ivany on 22.10.2005, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Arcida - Arcidae
Arca bravoensis n. sp. ark
Barbatia sp. Gray 1842 clam
 Ostreida - Ostreidae
Ostrea miradorensis n. sp. Olsson 1931 oyster
 Cardiida - Corbiculidae
Cyrena (Polymesoda) bravoensis n. sp. Olsson 1931 clam
 Cardiida - Mactridae
Spisula (Oxyperas) steinmanni n. sp. Olsson 1931 clam
 Cardiida - Veneridae
Pitaria sp., "Clementia peruviana n. sp." = Clementia (Egesta) peruviana
Pitaria sp. Roemer 1857 venus clam
"Clementia peruviana n. sp." = Clementia (Egesta) peruviana Olsson 1928 venus clam
 Cardiida - Tellinidae
Macoma lissonii n. sp. tellin clam
Gastropoda
 Architaenioglossa - Ampullinidae
Ampullina bravoensis n. sp. Olsson 1931 snail
 Neogastropoda - Buccinidae
Phos sp. Monfort 1810 true whelk
 Neogastropoda - Volutidae
Peruluta mancorensis Olsson 1928 volute
 Neogastropoda - Muricidae
Cymia berryi n. sp.
Cymia berryi n. sp. Olsson 1931 murex snail
 Neogastropoda - Harpidae
Morum (Oniscidia) indet. Mörch 1852 snail
Morum (Oniscidia) n. sp. Que. Charanal
Morum (Oniscidia) "n. sp. Que. Charanal" Mörch 1852 snail
Polinices (Neverita) qu rosana
 Cypraeoidea - Pediculariidae
"Cypraea (Cypraedia) chira" = Cypraedia (Eucypraedia) multicarinata
"Cypraea (Cypraedia) chira" = Cypraedia (Eucypraedia) multicarinata Dall 1890 snail
 Tonnoidea - Bursidae
Bursa sp. Roding 1798 frog shell
 Sorbeoconcha - Potamididae
Hannatoma tumbezi n. sp. horn snail
Hannatoma gesteri Hanna and Israelsky 1925 horn snail
 Sorbeoconcha - Pachychilidae
Pseudofaunus bravoensis n. sp. Olsson 1931 snail