Barro Colorado [Borbon Fm]: Middle Miocene, Ecuador
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Neogastropoda
- Cancellariidae
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Cancellaria (Pyruclia) lacondamini
Olsson 1964
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| recombined as Pyruclia lacondamini | ||||||||||
| new species | ||||||||||
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Gastropoda
- Neogastropoda
- Buccinidae
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Perunassa sapotilla
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| new species | ||||||||||
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Gastropoda
- Neogastropoda
- Marginellidae
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Marginella sapotilla
Hinds 1844
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| recombined as Prunum (Prunum) sapotilla | ||||||||||
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Gastropoda
- Neogastropoda
- Conidae
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Conus cf. patricius
Hinds 1843
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Bivalvia
- Cardiida
- Veneridae
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Cyclinella cf. beteyensis
Olsson 1922
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Bivalvia
- Cardiida
- Mactridae
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Mulinia pallida
(Broderip and Sowerby 1829)
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Harvella elegans
(Sowerby 1825)
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Bivalvia
- Cardiida
- Anatinellidae
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Raeta undulata
(Gould 1851)
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Bivalvia
- Cardiida
- Tellinidae
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Temnoconcha ecuadoriana
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| new species | ||||||||||
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Bivalvia
- Arcida
- Arcidae
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Anadara (Cunearca) melita
Olsson 1964
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| new species | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Ecuador | State/province: | Esmeraldas |
| Coordinates: | 1.1° North, 79.0° West (view map) | ||
| Paleocoordinates: | 0.3° North, 76.2° West | ||
| Basis of coordinate: | based on political unit | ||
| Geographic resolution: | outcrop |
Time
| Period: | Neogene | Epoch: | Miocene |
| 10 m.y. bin: | Cenozoic 5 | ||
| Key time interval: | Middle Miocene | ||
| Age range of interval: | 15.98000 - 11.63000 m.y. ago |
Stratigraphy
Lithology and environment
| Primary lithology: | tuffaceous lithified "shale" |
| Secondary lithology: | lithified sandstone |
| Includes fossils? | Y |
| Lithology description: The formation is composed of a variable development of tuffaceous shale, soft sandstones and some conglomerates and at most places the stratification is horizontal or nearly so. | |
| Environment: | lagoonal |
| Geology comments: The molluscan fossils would seem to indicate a lagoonal to fully marine environment of deposition, the fossiliferous beds of irregular or patchy occurrence. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | general faunal/floral analysis |
Metadata
| Database number: | 60751 | ||
| Authorizer: | A. Miller | Enterer: | K. Bulinski |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2006-05-22 10:02:42 | Last modified: | 2012-08-25 22:23:45 |
| Access level: | the public | Released: | 2006-05-22 10:02:42 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 17422. | A. A. Olsson. 1964. Neogene Mollusks From Northwestern Ecuador [A. Miller/K. Bulinski] |