Where: Piura, Peru (5.9° S, 80.6° W: paleocoordinates 8.5° S, 72.8° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Talara Shale Member (Talara Formation), Bartonian (41.3 - 38.0 Ma)
• Regarded as lower Upper Eocene on the basis of faunal similarity. 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? In most places the Talara Formation can be divided into three members, a lower shale (Talara Shale), a middle sandstone (Talara Sandstone), and an upper shale (Pozo Shale). In a complete section the Talara Formation has an average thickness of about 2800 ft. The collection is derived from a sandy basal layer known as the Lomitos Conglomerate in the Talara Shale member, which can reach a thickness of 400 ft or more.
• group of beds-level stratigraphic resolution
Environment/lithology: coastal; poorly lithified, yellow sandstone
Size class: macrofossils
Collection methods: quarrying,
• No museum repositories are reported, but material may presumably be the AMNH of PRI collections. Because of uncertaintly this field is left ommited.
Primary reference: A. A. Olsson. 1930. Contributions to the Tertiary Paleontology of Northern Peru: Part 3, Eocene Mollusca. Bulletins of American Paleontology 17(62):1-164 [A. Miller/A. Hendy/A. Hendy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 52527: authorized by Austin Hendy, entered by Austin Hendy on 10.08.2005
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
Turritella chira Olsson 1928 turret shell
Turritella samanensis Olsson 1928 turret shell | |
Epitonium (Acrilla) peruvianum Olsson 1928 wentletrap | |
Agaronia inca n. sp.
Agaronia inca n. sp. snail | |
Ancillarina pananga n. sp.
Ancillarina pananga n. sp. snail | |
Lyria scabulosa volute | |
Pseudoliva samanica true whelk
Pseudoliva modesta Olsson 1928 true whelk
Dorsanum lagunitensis Woods 1922 true whelk | |
"Tritiaria salina" = Nassarius (Tritiaria), Tritiaria terebratula
"Tritiaria salina" = Nassarius (Tritiaria) snail
Tritiaria terebratula Olsson 1928 snail | |
Daphnella salina snail | |
Drillia parina snail | |
Terebra negritensis n. sp.
Terebra negritensis n. sp. Olsson 1930 auger snail | |
Ficus otaria fig shell | |
"Amphiperas negritensis" = Sphaerocypraea negritensis
"Amphiperas negritensis" = Sphaerocypraea negritensis Olsson 1928 snail | |
| |
"? Sconsia samanica" = Doliocassis samanica
"? Sconsia samanica" = Doliocassis samanica Olsson 1928 snail | |
Polinices (Polinices) woodi moon snail
Natica (Natica) peruviana Olsson 1928 moon snail | |
Architectonica chira sundial
Architectonica sullana Olsson 1928 sundial | |
Bivalvia | |
Ensis sp. Schumacher 1817 clam | |
Martesia sp. Sowerby 1824 clam | |
"Corbula boggsi" = Juliacorbula boggsi, "Corbula salina" = Caryocorbula salina
"Corbula boggsi" = Juliacorbula boggsi Olsson 1928 clam
"Corbula salina" = Caryocorbula salina Olsson 1928 clam | |
Amotapas arbolensis clam | |
"Pitaria (Lamelliconcha) salsola" = Lamelliconcha hillii, "Clementia peruviana" = Clementia (Egesta) peruviana
"Pitaria (Lamelliconcha) salsola" = Lamelliconcha hillii Dall 1895 venus clam
"Clementia peruviana" = Clementia (Egesta) peruviana Olsson 1928 venus clam | |
? Mactra sp. Linnaeus 1767 clam | |
Mytilus sp. Linnaeus 1758 mussel | |
Anomia sp. Linnaeus 1758 jingle | |
Cephalopoda | |
| |
Rhynchonellata | |
Liothyrina peruviana Olsson 1928 |