USGS 20432a - Courbaril Member, Point Courbaril: Early/Lower Pliocene, Trinidad and Tobago

List of taxa
Where & when
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Arcida - Arcidae
Arca (aff. Arca) imbricata (Bruguière 1789)
Anadara (Cunearca) filicata
Bivalvia - Mytilida - Mytilidae
Brachidontes (Brachidontes) sp. Swainson 1840
Bivalvia - Carditida - Carditidae
Carditamera (Bryssomera) aff. affinis (Sowerby 1823)
recombined as Carditamera affinis
Bivalvia - Pholadida - Corbulidae
Caryocorbula (Caryocorbula) sp. Gardner 1926
Bivalvia - Cardiida - Veneridae
Chione (Nioche) veatchiana Maury 1912
Chione (Lirophora) sanctidavidis
original and current combination Lirophora
Dosinia (Dosinia) sp. Scopoli 1777
Cyclinella aff. tenuis (Récluz 1852)
original and current combination Dosinia (Artemis) tenuis
Bivalvia - Cardiida - Donacidae
Donax brightonensis
Bivalvia - Cardiida - Tellinidae
Strigilla (Strigilla) carnaria (Linnaeus 1758)
Moerella (Moerella) elinguis
spelled with current rank as Tellina (Moerella)
Eurytellina punicea (Born 1778)
Bivalvia - Cardiida - Semelidae
Abra cf. aequalis (Say 1822)
Cumingia galbensis
Semele purpurascens (Gmelin 1791)
Semele proficua (Pulteney 1799)
Semele aff. anteriocosta Vokes 1938
Bivalvia - Cardiida - Cardiidae
Trachycardium (Dallocardia) sanctidavidis
original and current combination Dallocardia
Laevicardium laevigatum (Linnaeus 1758)
replaced by Laevicardium serratum
Trigoniocardia (Trigoniocardia) maturensis
Gastropoda - Neogastropoda - Muricidae
Cymia brightoniana Maury 1925
recombined as Cymia (Cymia) brightoniana
Murex (Chicoreus) cf. brevifrons (Lamarck 1822)
    = Chicoreus (Triplex) cornurectus Guppy 1876
Landau and Marques da Silva 2010
Thais (Stramonita) cf. haemastoma (Linnaeus 1767)
recombined as Stramonita haemostoma
Gastropoda - Sorbeoconcha - Cerithiidae
Cerithium harrisi
Scaphopoda - Dentaliida - Dentaliidae
Dentalium (Dentalium) divulgatum
see common names

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
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
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.
Geology comments: The assemblage as a whole points to a nearshore environment, with some brackish influence (compared with Melajo Clay assemblages).
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.
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]