USGS 8302 (Miocene of Trinidad and Tobago)

Where: Trinidad and Tobago (10.4° N, 61.3° W)

• Paleocoordinates: 10.7° N, 57.1° W (Wright 2013)

• coordinate stated in text

• outcrop-level geographic resolution

When: Middle Miocene (16.0 - 11.6 Ma)

• 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.

• bed-level stratigraphic resolution

Environment/lithology: marine; unlithified siliciclastic sediments

• SPECIFIC LITHOLOGY: Unknown, presumably siliciclastic. LITHIFICATION: Assumed to be unlithified based figured specimes (free of sediment).

Size class: macrofossils

Collected by Penny, Bullbrook; reposited in the USNM

• COLLECTORS: F. W. Penny and J. A. Bullbrook (unknown date, but presumably during the 1910's-early 1920's). REPOSITORY: USNM.

Primary reference: 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]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 74920: authorized by Austin Hendy, entered by Austin Hendy on 05.09.2007

Creative Commons license: CC0 (CC0)

Taxonomic list

• 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.
Show authors, comments, and common names
Gastropoda
 Cerithioidea - Turritellidae
Turritella altilira chiriquensis
 Heterostropha - Pyramidellidae
Pyramidella sp., Turbonilla sp., Odostomia sp.
Pyramidella sp. Lamarck 1799 snail
poorly preserved; several spp.
Turbonilla sp. Risso 1826 snail
poorly preserved; several spp.
Odostomia sp. Fleming 1817 snail
poorly preserved
 Heterostropha - Architectonicidae
Architectonica sp.
Architectonica sp. Röding 1798 sundial
poorly preserved; juvenile
 Epitonioidea - Epitoniidae
Epitonium sp., "Acrilla sp." = Epitonium (Acrilla)
Epitonium sp. Bolten 1798 wentletrap
poorly preserved; juvenile
"Acrilla sp." = Epitonium (Acrilla) Adams and Adams 1860 wentletrap
poorly preserved; fragment
 Cerithioidea - Turritellidae
"Turritella gatunensis caronensis n. ssp." = Turritella (Broderiptella) caronensis
"Turritella gatunensis caronensis n. ssp." = Turritella (Broderiptella) caronensis Mansfield 1925 turret shell
 Vanikoroidea - Eulimidae
Melanella sp.
Melanella sp. Bowdich 1822 snail
poorly preserved
 Neogastropoda - Turridae
"Turris brassoensis n. sp." = Gemmula machapoorensis
"Turris brassoensis n. sp." = Gemmula machapoorensis Maury 1925 turrid
 Neogastropoda - Clathurellidae
Glyphostoma addina n. sp., "Glyphostoma amicta rintriada n. ssp." = Nannodiella rintriada
Glyphostoma addina n. sp. snail
"Glyphostoma amicta rintriada n. ssp." = Nannodiella rintriada Mansfield 1925 snail
 Neogastropoda - Borsoniidae
Microdrillia propetrina n. sp.
Microdrillia propetrina n. sp. Mansfield 1925 snail
 Neogastropoda - Drilliidae
Drillia tridadina n. sp., Drillia pennyi n. sp., Drillia inniadda n. sp., "Drillia inadrina n. sp." = Syntomodrillia inadrina
Drillia tridadina n. sp. Mansfield 1925 snail
Drillia pennyi n. sp. Mansfield 1925 snail
Drillia inniadda n. sp. Mansfield 1925 snail
"Drillia inadrina n. sp." = Syntomodrillia inadrina Mansfield 1925 snail
 Neogastropoda - Cystiscidae
"Marginella (Closia) nitrina n. sp." = Granulina nitrina
"Marginella (Closia) nitrina n. sp." = Granulina nitrina Mansfield 1925 snail
 Neogastropoda - Muricidae
Typhis sp.
Typhis sp. Montfort 1810 murex snail
poorly preserved, fragment
 Neogastropoda - Marginellidae
Marginella solitaria montserratensis, Marginella (Faba) brassoensis n. sp., Marginella (Faba) bulbrooki n. sp.
Marginella solitaria montserratensis Mansfield 1925 margin shell
Marginella (Faba) brassoensis n. sp. Mansfield 1925 margin shell
Marginella (Faba) bulbrooki n. sp. Mansfield 1925 margin shell
 Neogastropoda - Olividae
Olivella sp.
Olivella sp. Swainson 1831 olive snail
poorly preserved; juvenile
 Neogastropoda - Columbellidae
Strombina sp., "Strombina walli n. sp." = Sincola (Sincola) walli
Strombina sp. Mörch 1852 dove shell
poorly preserved; juvenile
"Strombina walli n. sp." = Sincola (Sincola) walli Mansfield 1925 dove shell
 Neogastropoda - Nassariidae
"Alectrion brassiensis n. sp." = Nassarius (Alectrion)
"Alectrion brassiensis n. sp." = Nassarius (Alectrion) snail
 Sorbeoconcha - Caecidae
Caecum properegulare n. sp.
Caecum properegulare n. sp. Mansfield 1925 snail
 Sorbeoconcha - Naticidae
"Natica canrena" = Naticarius canrena
"Natica canrena" = Naticarius canrena Linnaeus 1758 moon snail
Scaphopoda
 Gadilida - Gadilidae
Cadulus caronensis n. sp.
Cadulus caronensis n. sp. Mansfield 1925 tusk shell
 Dentaliida - Dentaliidae
Dentalium cossmannianum
Dentalium cossmannianum Pilsbry and Sharp 1897 tusk shell