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: Mancora Formation, Early/Lower Oligocene (33.9 - 28.4 Ma)
• top of unit is more marine (below is mostly non-marine)
•basal Oligocene according to Higley 2004
Environment/lithology: marine; coarse-grained, white sandstone and coarse-grained conglomerate
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 55437: authorized by Linda Ivany, entered by Linda Ivany on 23.10.2005
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
Pachychilus indet. Lea snail | |
Hemisinus terebriformis n. sp.
Hemisinus terebriformis n. sp. Olsson 1931 snail | |
Ampullinopsis spenceri Cooke 1919 snail | |
Bivalvia | |
Mytilus canoasenis n. sp.
Mytilus canoasenis n. sp. mussel | |
Callista (Costacallista) canoasensis n. sp. Olsson 1931 venus clam
Pitaria (Lamelliconcha) wolfi n. sp. Olsson 1931 venus clam | |
"Mactrella tumbezia n. sp." = Mactrellona tumbezia
"Mactrella tumbezia n. sp." = Mactrellona tumbezia Olsson 1921 clam | |
Tagelus indet. Gray 1847 clam | |
Donax petersoni n. sp.
Donax petersoni n. sp. Olsson 1931 clam | |
Angulus indet. Megerle 1811 tellin clam | |
"Leda (Adrana) indet." = Adrana
"Leda (Adrana) indet." = Adrana Adams and Adams 1858 pointed nut clam |