Mancora Fm: Late/Upper Eocene, Peru
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Turritellidae
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Turritella conguistadorana
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Gastropoda
- Neogastropoda
- Thaisidae
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Acanthina (Chorus) meroensis n. sp.
Olsson 1931
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Gastropoda
- Neogastropoda
- Pseudolividae
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Pseudoliva parinasensis
Woods 1922
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| recombined as Pseudoliva (Buccinorbis) parinasensis | ||||||||||
| var. mancorensis | ||||||||||
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Gastropoda
- Neogastropoda
- Fasciolariidae
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Mancorus burtii
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Gastropoda
- Neogastropoda
- Volutidae
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Peruluta mancorensis
(Olsson 1928)
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Gastropoda
- Neogastropoda
- Clavatulidae
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Surcula ? mayi
Hanna and Israelsky 1925
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Bivalvia
- Nuculida
- Nuculidae
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Nucula mancorensis n. sp.
Olsson 1931
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Bivalvia
- Cardiida
- Veneridae
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Pitaria (Agriopoma) mancorensis n. sp.
Olsson 1931
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| recombined as Pitar mancorensis | ||||||||||
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Clementia peruviana
Olsson 1928
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| recombined as Clementia (Egesta) peruviana | ||||||||||
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Bivalvia
- Cardiida
- Tellinidae
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Macoma meroensis n. sp.
Olsson 1931
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Bivalvia
- Carditida
- Crassatellidae
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Crassatellites neorhynchus n. sp.
Olsson 1931
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| recombined as Crassatella neorhynchus | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Peru | State/province: | Piura |
| Coordinates: | 5.2° South, 80.6° West (view map) | ||
| Paleocoordinates: | 7.7° South, 73.5° West | ||
| Basis of coordinate: | based on nearby landmark | ||
| Altitude: | 24 meters | ||
| Geographic resolution: | local area |
Time
| Period: | Paleogene | Epoch: | Eocene |
| Stage: | Priabonian | 10 m.y. bin: | Cenozoic 3 |
| Key time interval: | Late/Upper Eocene | ||
| Age range of interval: | 37.71000 - 33.90000 m.y. ago |
Stratigraphy
| Formation: | Mancora | ||||
| Stratigraphic resolution: | formation | ||||
| Stratigraphy comments: basal Oligocene according to Higley 2004.
Olsson’s (1931) description of the area from which specimens of C. neorhynchus were collected corresponds to outcrop mapped as the upper Eocene Mirador Formation (Palacios 1994). | |||||
Lithology and environment
| Primary lithology: | red or brown,yellow sandstone |
| Secondary lithology: | brown "shale" |
| Includes fossils? | Y |
| Lithology description: yellow, brown or reddish sandstones with interbedded chocolate and brown shales and seams fo black conglomerates sparsely fossiliferous, best horizons near the top | |
| Environment: | marine indet. |
| Geology comments: more active coast than earlier Oligocene - high relief coastline with lots of erosion
may be marginal marine or nonmarine in parts | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
Metadata
| Also known as: | Punta Bravo grits | ||
| Database number: | 55432 | ||
| Authorizer: | L. Ivany | Enterer: | L. Ivany |
| Modifier: | M. Krause | Research group: | marine invertebrate |
| Created: | 2005-10-22 13:33:01 | Last modified: | 2017-05-23 16:34:15 |
| Access level: | the public | Released: | 2005-10-22 13:33:01 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 14915. | 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] |