USGS 10991 - Courbaril Member, Point Courbaril: Early/Lower Pliocene, Trinidad and Tobago

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda - Lepetellida - Fissurellidae
Diodora cavenensis
Gastropoda - Epitoniidae
Epitonium (Epitonium) aff. foliaceicostatum
Epitonium (Epitonium) humphreysi
Gastropoda - Neotaenioglossa - Calyptraeidae
Calyptraea centralis (Conrad 1841)
Gastropoda - Cerithiidae
Bittium (Bittiolum) fretense
original and current combination Bittiolum
Cerithium harrisi
Gastropoda - Neogastropoda - Olividae
Olivella (Minioliva) fundarugata
Gastropoda - Neogastropoda - Nassariidae
Nassarius galbanus
Nassarius (Phrontis) vibex (Say 1822)
Nassarius (Uzita) trinitatensis Jung 1969
Gastropoda - Neogastropoda - Columbellidae
Anachis (Costoanachis) obesa (Adams 1845)
recombined as Parvanachis obesa
Strombina (Sincola) crassilabrum (Guppy 1874)
recombined as Sincola (Sincola) crassilabrum
Anachis (Anachis) asphaltoda
Gastropoda - Neogastropoda - Mangeliidae
Ithycythara sp. Woodring 1928
Gastropoda - Neogastropoda - Marginellidae
Prunum (Prunum) dallianum (Maury 1912)
Gastropoda - Neogastropoda - Muricidae
Thais (Stramonita) cf. haemostoma (Linnaeus 1767)
Cymia brightoniana Maury 1925
recombined as Cymia (Cymia) brightoniana
Risomurex galbensis
Murex (Chicoreus) cf. brevifrons (Lamarck 1822)
    = Chicoreus (Triplex) cornurectus Guppy 1876
Landau and Marques da Silva 2010
Gastropoda - Naticidae
Natica (Naticarius) aff. canrena (Linnaeus 1758)
recombined as Naticarius canrena
Gastropoda - Triphoridae
Triphora guppyi
Gastropoda - Heterostropha - Architectonicidae
Architectonica (Pseudotorinia) cf. semidecussata
original and current combination Pseudotorinia
Gastropoda - Neritidae
Neritina (Vitta) cf. virginia (Linnaeus 1758)
recombined as Neritina virginea
Bivalvia - Arcida - Noetiidae
Noetia (Noetia) sheldoniana (Maury 1912)
Bivalvia - Arcida - Arcidae
Anadara (Cunearca) filicata
Lunarca billingsiana (Maury 1912)
Anadara (Anadara) inaequilateralis (Maury 1917)
Bivalvia - Pectinida - Anomiidae
Anomia simplex d'Orbigny 1845
Bivalvia - Pectinida - Pectinidae
Aequipecten (Plagioctenium) sp. (Dall 1898)
synonym of Argopecten
Bivalvia - Lucinida - Lucinidae
Lucina (Lucinisca) roigi
Bivalvia - Pholadida - Corbulidae
Caryocorbula (Caryocorbula) helenae
Caryocorbula (Caryocorbula) sp. Gardner 1926
Juliacorbula aequivalvis (Philippi 1836)
Bivalvia - Cardiida - Chamidae
Chama cf. macerophylla Gmelin 1791
[entered as Chama macrophylla]
    = Chama cf. macerophylla Gmelin 1791
Rosenberg 2005
Bivalvia - Cardiida - Veneridae
Pitar (Lamelliconcha) circinatus
Chione (Lirophora) sanctidavidis
original and current combination Lirophora
Dosinia (Dosinia) sp. Scopoli 1777
Chione (Nioche) veatchiana Maury 1912
Bivalvia - Cardiida - Cardiidae
Trigoniocardia (Trigoniocardia) maturensis
Trachycardium (Dallocardia) sanctidavidis
spelled with current rank as Dallocardia
Bivalvia - Cardiida - Donacidae
Donax striatus Linnaeus 1767
Bivalvia - Cardiida - Tellinidae
Eurytellina melajoensis
spelled with current rank as Tellina (Eurytellina)
? Eurytellina oligoscissurata
spelled with current rank as Tellina (Eurytellina)
Moerella (Moerella) elinguis
spelled with current rank as Tellina (Moerella)
Bivalvia - Cardiida - Semelidae
Semele laevis (Sowerby 1833)
Subspecies: Semele laevis costaricensis
Semele aff. anteriocosta Vokes 1938
Cumingia galbensis
Abra cf. aequalis (Say 1822)
Bivalvia - Nuculanida - Nuculanidae
Nuculana (Saccella) ludificans
original and current combination Saccella
Scaphopoda - Dentaliida - Dentaliidae
Dentalium (Dentalium) divulgatum
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:60409
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:A. Hendy Research group:marine invertebrate
Collections that are a subset of this one:60644, 60646, 60647, 60649, 60650, 60651, 60652, 60653, 60654, 60655
Created:2006-05-14 13:13:07 Last modified:2013-11-25 13:37:23
Access level:the public Released:2006-05-14 13:13:07
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]
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]