Quebrada Platanos [Esmeraldas Fm]: Early/Lower Pliocene, Ecuador
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Anthozoa
- Scleractinia
- Flabellidae
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Flabellum sp.
Lesson 1831
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Gastropoda
- Neogastropoda
- Olividae
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Oliva sp.
Bruguière 1789
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Gastropoda
- Neogastropoda
- Pseudomelatomidae
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Buridrillia cf. panarica
(Olsson 1942)
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Gastropoda
- Neogastropoda
- Conidae
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Conus sp.
Linnaeus 1758
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Gastropoda
- Cassidae
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Echinophoria woodringi
Olsson 1964
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| new species | ||||||||||
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Bivalvia
- Nuculanida
- Nuculanidae
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Nuculana sp.
Link 1807
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Bivalvia
- Cardiida
- Cardiidae
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Microcardium sp.
Thiele 1934
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Bivalvia
- Arcida
- Arcidae
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Anadara sp.
Gray 1847
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Scaphopoda
- Dentaliida
- Dentaliidae
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Dentalium sp.
Linnaeus 1758
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| see common names | ||||||||||
Geography
| Country: | Ecuador | State/province: | Manabi |
| Coordinates: | 0.8° South, 77.5° West (view map) | ||
| Paleocoordinates: | 1.0° South, 76.7° West | ||
| Basis of coordinate: | based on political unit | ||
| Geographic resolution: | outcrop |
Time
| Period: | Neogene | Epoch: | Pliocene |
| Stage: | Zanclean | 10 m.y. bin: | Cenozoic 6 |
| Key time interval: | Early/Lower Pliocene | ||
| Age range of interval: | 5.33300 - 3.60000 m.y. ago |
Stratigraphy
| Formation: | Esmeraldas | ||||
| Stratigraphic resolution: | formation | ||||
| Stratigraphy comments: AGE: Stated to be Late Miocene in text; Early Pliocene following Beu (2010). COMMENTS: thought to be equivalent to the Borbon formation of the Rio Santiago section, resting unconformably on top of conglomerate beds containing Turritella altilira and other Miocene fossils probably not greater than 300 meters in thickness. | |||||
Lithology and environment
| Primary lithology: | tuffaceous lithified mudstone |
| Secondary lithology: | lithified sandstone |
| Includes fossils? | Y |
| Lithology description: thin bedded to massive tuffaceous mudstones sometimes with interbeds of soft sandstones. small or medium-sized rounded pebbles are scattered throughout the formation, or more rarely concentrated into minor beds or seams of conglomerate. Large calcareous concretions, some rounded or with an irregular rootlike shape, generally with hollow centers are common at many places. The beds are highly foraminiferal, with pelagic types, often pure enough to form a foraminiferal oozelike sediment. On the fresh surface of the rock platform, the formation is hard, and of a gray-black or dark olive-green color. | |
| Environment: | marine indet. |
| Geology comments: deep water fauna with a few shallow water forms that were badly worn, indicating transportation, while deep-water fauna were in perfect condition, suggesting turbidity currents. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection excludes: | all microfossils,some macrofossils |
| Reason for describing collection: | general faunal/floral analysis |
| Taxonomic list comments:only some of the species are listed | |
Metadata
| Database number: | 60770 | ||
| Authorizer: | A. Miller | Enterer: | K. Bulinski |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2006-05-22 18:26:09 | Last modified: | 2012-11-23 20:07:22 |
| Access level: | the public | Released: | 2006-05-22 18:26:09 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 17422. | A. A. Olsson. 1964. Neogene Mollusks From Northwestern Ecuador [A. Miller/K. Bulinski] |