Variegated Beds - Zorritos: Early/Lower Miocene, Peru
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Mytilida
- Mytilidae
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Mytilus sp.
Linnaeus 1758
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Bivalvia
- Arcida
- Noetiidae
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Arca (Noetia) retractata
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| original and current combination Noetia | ||||||||||
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Bivalvia
- Arcida
- Arcidae
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Arca (Senilia) chiriquiensis
(Gabb 1861)
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| recombined as Anadara (Grandiarca) chiriquiensis | ||||||||||
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Arca (Noetia) cholana
Spieker 1922
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Bivalvia
- Ostreida
- Ostreidae
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Ostrea sp.
Linnaeus 1758
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Bivalvia
- Pectinida
- Anomiidae
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Anomia berryi
Spieker 1922
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| synonym of Anomia peruviana | ||||||||||
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Bivalvia
- Pholadida
- Corbulidae
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Corbula (Caryocorbula) propinqua
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Bivalvia
- Cardiida
- Tellinidae
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Macoma sp.
Leach 1819
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Bivalvia
- Cardiida
- Veneridae
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Chione (Chionopsis) costaricensis
Olsson 1922
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Bivalvia
- Cardiida
- Anatinellidae
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Labiosa (Raeta) undulata
(Gould 1851)
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| recombined as Raeta undulata | ||||||||||
| subsp. gardenerae | ||||||||||
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Gastropoda
- Cerithiidae
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Cerithium grillanum
Spieker 1922
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Cerithium infranodatum
Spieker 1922
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Gastropoda
- Potamididae
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Potamides bocapanensis
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Potamides ormei
Maury 1917
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| synonym of Potamides suprasulcatus | ||||||||||
| subsp. infraliratus | ||||||||||
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Gastropoda
- Turritellidae
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Turritella varicosta
(Spieker 1922)
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Turritella cf. infracarinata
Grzybowski 1899
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| recombined as Turritella (Turritella) infracarinata | ||||||||||
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Gastropoda
- Naticidae
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Polinices (Polinices) coronis
(Hanna and Israelsky 1925)
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| synonym of Polinices stanislasmeunieri | ||||||||||
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Gastropoda
- Neogastropoda
- Buccinidae
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Northia guttifera
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Gastropoda
- Neogastropoda
- Melongenidae
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Melongena columbiana
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Melongena melongena
(Linnaeus 1758)
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| subsp. consors | ||||||||||
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Gastropoda
- Neogastropoda
- Conidae
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Conus (Dendroconus) cf. williamgabbi
(Maury 1917)
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| original and current combination Conus williamgabbi | ||||||||||
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Conus (Dendroconus) bravoi
(Spieker 1922)
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| recombined as Conus bravoi | ||||||||||
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Gastropoda
- Neotaenioglossa
- Calyptraeidae
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Crepidula sp.
Lamarck 1799
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Calyptraea sp.
Lamarck 1799
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| typo "Calytraea" corrected | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Peru |
| Coordinates: | 3.7° South, 80.7° West (view map) |
| Paleocoordinates: | 4.9° South, 76.4° West |
| Basis of coordinate: | estimated from map |
| Geographic resolution: | local area |
Time
| Period: | Neogene | Epoch: | Miocene |
| 10 m.y. bin: | Cenozoic 5 | ||
| Key time interval: | Early/Lower Miocene | ||
| Age range of interval: | 23.03000 - 15.98000 m.y. ago |
Stratigraphy
| Formation: | Zorritos | Member: | Variegated Beds | ||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: middle unit of Zorritos Formation | |||||
Lithology and environment
| Primary lithology: | deformed bedding,green,red or brown,yellow "shale" |
| Secondary lithology: | red conglomeratic,carbonaceous sandstone |
| Lithology description: red, green, yellowto chocolate-colored shales interbedded with rust-colored sandstones, white grits, cobble conglomerates and lignites seams of rather pure cannel coal may be present while fossil layers are frequent deformed beds probably due to intraformational creep and surface slumping | |
| Environment: | paralic indet. |
| Geology comments: brackish water forms such as Potamides, oysters and varieties of Arca chiriquiensis are rather characteristic
marine fossils are worn | |
Taphonomy
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Taxonomic list comments:mollusks only | |
Metadata
| Database number: | 66177 | ||
| Authorizer: | L. Ivany | Enterer: | L. Ivany | Research group: | marine invertebrate |
| Created: | 2006-10-03 17:58:51 | Last modified: | 2006-10-03 20:58:51 |
| Access level: | the public | Released: | 2006-10-03 17:58:50 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 17487. | A. A. Olsson. 1932. Contributions to the Tertiary Paleontology of Northern Peru: Part 5, Miocene Mollusca. Bulletins of American Paleontology 19(68):1-272 [A. Miller/A. Hendy] |