USGS 20432a - Courbaril Member, Point Courbaril: Early/Lower Pliocene, Trinidad and Tobago
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Arcida
- Arcidae
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Arca (aff. Arca) imbricata
(Bruguière 1789)
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Anadara (Cunearca) filicata
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Bivalvia
- Mytilida
- Mytilidae
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Brachidontes (Brachidontes) sp.
Swainson 1840
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Bivalvia
- Carditida
- Carditidae
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Carditamera (Bryssomera) aff. affinis
(Sowerby 1823)
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| recombined as Carditamera affinis | |||||||
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Bivalvia
- Pholadida
- Corbulidae
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Caryocorbula (Caryocorbula) sp.
Gardner 1926
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Bivalvia
- Cardiida
- Veneridae
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Chione (Nioche) veatchiana
Maury 1912
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Chione (Lirophora) sanctidavidis
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| original and current combination Lirophora | |||||||
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Dosinia (Dosinia) sp.
Scopoli 1777
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Cyclinella aff. tenuis
(Récluz 1852)
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| original and current combination Dosinia (Artemis) tenuis | |||||||
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Bivalvia
- Cardiida
- Donacidae
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Donax brightonensis
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Bivalvia
- Cardiida
- Tellinidae
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Strigilla (Strigilla) carnaria
(Linnaeus 1758)
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Moerella (Moerella) elinguis
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| spelled with current rank as Tellina (Moerella) | |||||||
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Eurytellina punicea
(Born 1778)
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Bivalvia
- Cardiida
- Semelidae
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Abra cf. aequalis
(Say 1822)
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Cumingia galbensis
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Semele purpurascens
(Gmelin 1791)
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Semele proficua
(Pulteney 1799)
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Semele aff. anteriocosta
Vokes 1938
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Bivalvia
- Cardiida
- Cardiidae
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Trachycardium (Dallocardia) sanctidavidis
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| original and current combination Dallocardia | |||||||
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Laevicardium laevigatum
(Linnaeus 1758)
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| replaced by Laevicardium serratum | |||||||
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Trigoniocardia (Trigoniocardia) maturensis
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Gastropoda
- Neogastropoda
- Muricidae
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Cymia brightoniana
Maury 1925
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| recombined as Cymia (Cymia) brightoniana | |||||||
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Murex (Chicoreus) cf. brevifrons
(Lamarck 1822)
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= Chicoreus (Triplex) cornurectus
Guppy 1876
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Landau and Marques da Silva 2010 | ||||||
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Thais (Stramonita) cf. haemastoma
(Linnaeus 1767)
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| recombined as Stramonita haemostoma | |||||||
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Gastropoda
- Sorbeoconcha
- Cerithiidae
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Cerithium harrisi
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Scaphopoda
- Dentaliida
- Dentaliidae
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Dentalium (Dentalium) divulgatum
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| see common names | |||||||
Geography
| Country: | Trinidad and Tobago |
| Coordinates: | 10.2° North, 61.6° West (view map) |
| Paleocoordinates: | 10.2° North, 60.9° West |
| Basis of coordinate: | based on nearby landmark |
| 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: | Morne l'Enfer | Member: | Courbaril | ||
| Local section: | Point Galba | ||||
| Regional section: | Brighton | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Collection is from the Courbaril Sand and Clay Member of the Upper Morne l'Enfer Formation. The Courbaril fauna is considered to be of early Pliocene age and is probably slightly older than the Matura fauna. | |||||
Lithology and environment
| Primary lithology: | poorly lithified sandstone |
| Secondary lithology: | claystone |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: Poor reporting of lithologies. Named as the "Courbaril Sand and Clay Member", so these lithologies are assigned. | |
| Environment: | shoreface |
| Geology comments: The assemblage as a whole points to a nearshore environment, with some brackish influence (compared with Melajo Clay assemblages). | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | good |
Collection methods and comments
| Collection excludes: | some macrofossils,some microfossils |
| Collection methods: | selective quarrying,field collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | PRI,USNM |
| Collection method comments: All material descibed in this report is reposited in the Naturhistorisches Mueum, Basel, or the USNM. Additional material collection from this unit is found at PRI. | |
| Taxonomic list comments:Exhaustive for Mollusca. Crab claws, corals, fish teeth, and scarce foraminifera also exist in the unit, though are not listed. Van de Bold (1963) also lists ostracords from several localities. | |
Metadata
| Database number: | 60644 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy | Research group: | marine invertebrate |
| Subset of collection #: | 60409 | ||
| Created: | 2006-05-19 08:36:45 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | the public | Released: | 2006-05-19 08:36:44 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 17317. | P. Jung. 1969. Miocene and Pliocene mollusks from Trinidad. Bulletins of American Paleontology 55(247):293-697 [A. Miller/A. Hendy] |
Secondary references:
| 36423 | B. Landau and C. Marques da Silva. 2010. Early Pliocene gastropods of Cubagua, Venezuela: Taxonomy, palaeobiogeography and ecostratigraphy. Palaeontos 19:1-221 [A. Hendy/A. Hendy] |