USGS 8302: Middle Miocene, Trinidad and Tobago
collected by Penny, Bullbrook

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda - Epitoniidae
Epitonium sp. Bolten 1798
poorly preserved; juvenile
Acrilla sp. Adams and Adams 1860
poorly preserved; fragment
Gastropoda - Eulimidae
Melanella sp. Bowdich 1822
poorly preserved
Gastropoda - Turritellidae
Turritella gatunensis Conrad 1857
SUBSPECIES: T. gatunensis caronensis n. subsp.
    = Turritella (Broderiptella) caronensis Mansfield 1925
Landau and Marques da Silva 2010
Turritella altilira Conrad 1857
recombined as Turritella (Bactrospira) altilira
SUBSPECIES: T. altilira chiriquensis
Gastropoda - Neogastropoda - Olividae
Olivella sp. Swainson 1831
poorly preserved; juvenile
Gastropoda - Neogastropoda - Nassariidae
Alectrion brassiensis n. sp.
spelled with current rank as Nassarius (Alectrion)
Gastropoda - Neogastropoda - Columbellidae
Strombina sp. Mörch 1852
poorly preserved; juvenile
Strombina walli n. sp. Mansfield 1925
recombined as Sincola (Sincola) walli
Gastropoda - Neogastropoda - Drilliidae
Drillia inadrina n. sp. Mansfield 1925
recombined as Syntomodrillia inadrina
Drillia pennyi n. sp. Mansfield 1925
Drillia tridadina n. sp. Mansfield 1925
Drillia inniadda n. sp. Mansfield 1925
Gastropoda - Neogastropoda - Borsoniidae
Microdrillia propetrina n. sp. Mansfield 1925
Gastropoda - Neogastropoda - Clathurellidae
Glyphostoma amicta (Guppy 1896)
recombined as Nannodiella amicta
SUBSPECIES: G. amicta rintriada n. subsp.
Glyphostoma addina n. sp.
Gastropoda - Neogastropoda - Turridae
Turris brassoensis n. sp. Mansfield 1925
synonym of Gemmula machapoorensis
Gastropoda - Neogastropoda - Marginellidae
Marginella solitaria Guppy 1896
SUBSPECIES: M. solitaria montserratensis
Marginella (Faba) bulbrooki n. sp. Mansfield 1925
Marginella (Faba) brassoensis n. sp. Mansfield 1925
Gastropoda - Neogastropoda - Cystiscidae
Marginella (Closia) nitrina n. sp. Mansfield 1925
recombined as Granulina nitrina
Gastropoda - Neogastropoda - Muricidae
Typhis sp. Montfort 1810
poorly preserved, fragment
Gastropoda - Naticidae
Natica canrena (Linnaeus 1758)
recombined as Naticarius canrena
Gastropoda - Caecidae
Caecum properegulare n. sp. Mansfield 1925
Gastropoda - Heterostropha - Pyramidellidae
Turbonilla sp. Risso 1826
poorly preserved; several spp.
Odostomia sp. Fleming 1817
poorly preserved
Pyramidella sp. Lamarck 1799
poorly preserved; several spp.
Gastropoda - Heterostropha - Architectonicidae
Architectonica sp. Röding 1798
poorly preserved; juvenile
Scaphopoda - Gadilida - Gadilidae
Cadulus caronensis n. sp. Mansfield 1925
Scaphopoda - Dentaliida - Dentaliidae
Dentalium cossmannianum Pilsbry and Sharp 1897
see common names

Geography
Country:Trinidad and Tobago County:Caroni
Coordinates: 10.4° North, 61.3° West (view map)
Paleocoordinates:10.1° North, 58.8° West
Basis of coordinate:stated in text
Geographic resolution:outcrop
Time
Period:Neogene Epoch:Miocene
10 m.y. bin:Cenozoic 5
Key time interval:Middle Miocene
Age range of interval:15.97000 - 11.60800 m.y. ago
Stratigraphy
Stratigraphic resolution:bed
Stratigraphy comments: STRATIGRAPHIC RELATIONS: From unknown lithostratigraphic unit. THICKNESS: Unknown AGE: Stated to be "Middle or Lower Miocene" in text, but potentially could be younger in more recent revisions; a Middle Miocene age is assigned here. STRATIGRAPHIC POSITION: Unknown.
Lithology and environment
Primary lithology: unlithified "siliciclastic"
Includes fossils?Y
Lithology description: SPECIFIC LITHOLOGY: Unknown, presumably siliciclastic. LITHIFICATION: Assumed to be unlithified based figured specimes (free of sediment).
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Preservation of anatomical detail:good
Collection methods and comments
Collection excludes:some macrofossils
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Museum repositories:USNM
Collectors:Penny, Bullbrook
Collection method comments: COLLECTORS: F. W. Penny and J. A. Bullbrook (unknown date, but presumably during the 1910's-early 1920's). REPOSITORY: USNM.
Taxonomic list comments:COVERAGE: Exhaustive for gastropoda and scaphopoda. Bivalvia not listed, but presumably present. NOMENCLATURE: Authoritative publication with subgenus and species assignments, but with antiquated nomenclature reflecting present usage.
Metadata
Database number:74920
Authorizer:A. Hendy Enterer:A. Hendy
Research group:marine invertebrate
Created:2007-09-05 21:34:30 Last modified:2013-11-25 13:37:23
Access level:authorizer only Released:2007-09-05 21:34:30
Creative Commons license:CC BY
Reference information

Primary reference:

25271. W. C. Mansfield. 1925. Miocene gastropods and scaphopods from Trinidad, British West Indies. Proceedings of the United States National Museum 66(22):9116-9125 [A. Hendy/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]