Zone B (upper) - Jama Formation: Pliocene, Ecuador
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda
- Turritellidae
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Turritella pasada
Pilsbry and Olsson 1941
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Gastropoda
- Neogastropoda
- Buccinidae
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Phos cocosensis
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Gastropoda
- Neogastropoda
- Columbellidae
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Bifurcium bifurcium
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Bivalvia
- Arcida
- Noetiidae
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Noetia olssoni
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Bivalvia
- Pectinida
- Pectinidae
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Pecten tumbezensis
d'Orbigny 1846
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recombined as Leptopecten tumbezensis | |||||||
Bivalvia
- Thraciida
- Periplomatidae
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Periploma planiuscula
Sowerby I 1834
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recombined as Periploma (Periploma) planiuscula | |||||||
Bivalvia
- Cardiida
- Veneridae
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Tivela byronensis
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Chione (Chionopsis) venadoensis n. sp.
Pilsbry and Olsson 1941
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Anomalocardia callistoides
Pilsbry and Olsson 1941
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recombined as Iliochione callistoides | |||||||
Bivalvia
- Cardiida
- Mactridae
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Mulinia pallida
(Broderip and Sowerby 1829)
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Mulinia camina n. sp.
Pilsbry and Olsson 1941
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synonym of Mulinia pallida | |||||||
Bivalvia
- Cardiida
- Cardiidae
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Cardium (Trigoniocardia) cabopasadum n. sp.
Pilsbry and Olsson 1941
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Bivalvia
- Cardiida
- Donacidae
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Donax dentiferus
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Bivalvia
- Cardiida
- Tellinidae
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Tellina (Quadrans) cognata
Adams 1852
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recombined as Temnoconcha cognata | |||||||
Bivalvia
- Cardiida
- Psammobiidae
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Sanguinolaria tellinoides
Adams 1850
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recombined as Sanguinolaria (Sanguinolaria) tellinoides | |||||||
see common names |
Geography
Country: | Ecuador | State/province: | Manabi |
Coordinates: | 0.2° North, 80.3° West (view map) | ||
Paleocoordinates: | 0.0° South, 79.5° West | ||
Basis of coordinate: | based on nearby landmark | ||
Geographic resolution: | outcrop |
Time
Period: | Neogene | Epoch: | Pliocene |
10 m.y. bin: | Cenozoic 6 | ||
Key time interval: | Pliocene | ||
Age range of interval: | 5.33300 - 2.58800 m.y. ago |
Stratigraphy
Formation: | Jama | ||||
Local section: | Puerto Jama | Local bed: | 60 ft | ||
Local order: | bottom to top | ||||
Stratigraphic resolution: | group of beds | ||||
Stratigraphy comments: Rests upon Miocene strata with a marked unconformity. Thickness is approximately 15 ft. Collection is from the upper part of Zone B. |
Lithology and environment
Primary lithology: | concretionary,blue poorly lithified carbonaceous sandstone |
Includes fossils? | Y |
Lithology description: Bluish sands, somewhat lignitic in the upper part, nodular in the lower. | |
Environment: | shoreface |
Geology comments: The upper part of this zone comprises mainly beach [shoreface] forms. |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Collection methods and comments
Collection methods: | selective quarrying,field collection |
Reason for describing collection: | taxonomic analysis |
Collection method comments: Probably collected by current authors, though text also makes referal to faunal lists by Sheppard (1930) and a collecton of Barker. | |
Taxonomic list comments:Exhaustive for Mollusca; nomenclature probably outdated though accurate. |
Metadata
Database number: | 51885 | ||
Authorizer: | A. Hendy | Enterer: | A. Hendy |
Modifier: | A. Hendy | Research group: | marine invertebrate |
Created: | 2005-06-29 11:11:12 | Last modified: | 2013-11-25 13:37:23 |
Access level: | group members | Released: | 2006-06-29 11:11:12 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
13814. | H. A. Pilsbry and A.A. Olsson. 1941. A Pliocene fauna from Western Ecuador. Proceedings of the Natural Sciences of Philadelphia 93:1-79 [A. Miller/A. Hendy/A. Hendy] |