USGS 20432 - 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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Gastropoda
- Neotaenioglossa
- Calyptraeidae
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Calyptraea centralis
(Conrad 1841)
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Gastropoda
- Cerithiidae
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Bittium (Bittiolum) fretense
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| original and current combination Bittiolum | ||||||||||
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Cerithium harrisi
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Gastropoda
- Naticidae
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Natica (Naticarius) aff. canrena
(Linnaeus 1758)
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| recombined as Naticarius canrena | ||||||||||
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Gastropoda
- Neogastropoda
- Melongenidae
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Melongena melongena
(Linnaeus 1758)
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Gastropoda
- Neogastropoda
- Nassariidae
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Nassarius galbanus
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Nassarius (Uzita) trinitatensis
Jung 1969
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Gastropoda
- Neogastropoda
- Columbellidae
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Anachis (Anachis) asphaltoda
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Gastropoda
- Neogastropoda
- Marginellidae
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Volvarina informal sp. B
(Hinds 1844)
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Prunum (Prunum) dallianum
(Maury 1912)
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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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Gastropoda
- Tornidae
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Teinostoma (Aepystoma) caroniense
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Gastropoda
- Caecidae
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Caecum informal sp. D
Fleming 1813
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Gastropoda
- Lepetellida
- Fissurellidae
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Diodora cavenensis
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Bivalvia
- Nuculanida
- Nuculanidae
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Nuculana (Saccella) ludificans
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| original and current combination Saccella | ||||||||||
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Bivalvia
- Nuculida
- Nuculidae
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Nucula (Lamellinucula) baccata
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Bivalvia
- Pholadida
- Pholadidae
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Martesia striata
(Linnaeus 1758)
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Bivalvia
- Pholadida
- Corbulidae
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Juliacorbula aequivalvis
(Philippi 1836)
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Caryocorbula (Caryocorbula) helenae
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Caryocorbula (Caryocorbula) sp.
Gardner 1926
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Bivalvia
- Cardiida
- Chamidae
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Chama cf. macerophylla
Gmelin 1791
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| [entered as Chama macrophylla] | ||||||||||
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= Chama cf. macerophylla
Gmelin 1791
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Rosenberg 2005 | |||||||||
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Bivalvia
- Cardiida
- Veneridae
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Pitar (Lamelliconcha) circinatus
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Chione (Lirophora) sanctidavidis
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| original and current combination Lirophora | ||||||||||
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Chione (Nioche) veatchiana
Maury 1912
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Bivalvia
- Cardiida
- Mactridae
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Mulinia sp.
Gray 1837
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Bivalvia
- Cardiida
- Tellinidae
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Macoma (Psammacoma) informal sp. B
(Dall 1900)
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Strigilla (Strigilla) carnaria
(Linnaeus 1758)
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Psammotreta galbana
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Temnoconcha aff. brasiliana
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? Eurytellina oligoscissulata
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| spelled with current rank as Tellina (Eurytellina) | ||||||||||
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Eurytellina punicea
(Born 1778)
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Moerella (Moerella) elinguis
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| spelled with current rank as Tellina (Moerella) | ||||||||||
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Bivalvia
- Cardiida
- Semelidae
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Semele purpurascens
(Gmelin 1791)
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Semele laevis
(Sowerby 1833)
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| Subspecies: Semele laevis costaricensis | ||||||||||
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Semele proficua
(Pulteney 1799)
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Abra cf. aequalis
(Say 1822)
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Cumingia galbensis
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Bivalvia
- Cardiida
- Cardiidae
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Trigoniocardia (Trigoniocardia) maturensis
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Bivalvia
- Lucinida
- Lucinidae
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Lucina (Lucinisca) roigi
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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
- Mytilida
- Mytilidae
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Brachidontes (Brachidontes) sp.
Swainson 1840
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Bivalvia
- Pectinida
- Pectinidae
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Aequipecten (Plagioctenium) sp.
(Dall 1898)
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| synonym of Argopecten | ||||||||||
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Bivalvia
- Pectinida
- Anomiidae
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Anomia simplex
d'Orbigny 1845
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Bivalvia
- Arcida
- Arcidae
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Anadara (Anadara) inaequilateralis
(Maury 1917)
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Anadara (Cunearca) filicata
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Lunarca billingsiana
(Maury 1912)
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Bivalvia
- Arcida
- Noetiidae
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Noetia (Eontia) centrota
(Guppy 1867)
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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 Courbaril | ||||
| 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: | 60410 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2006-05-14 13:16:17 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | the public | Released: | 2006-05-14 13:16:17 |
| 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:
| 19419 | G. Rosenberg. 2005. Malacolog 4.0: A database of Western Atlantic marine Mollusca. [WWW database (version 4.1.0)] URL http://data.acnatsci.org/wasp [A. Hendy/A. Hendy] |