USGS 9212 (Miocene of Trinidad and Tobago)

Where: Trinidad and Tobago (10.4° N, 61.3° W: paleocoordinates 10.1° N, 58.8° W)

• 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 74921: authorized by Austin Hendy, entered by Austin Hendy on 05.09.2007

Creative Commons license: CC BY (attribution)

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
Gymnolaemata
 Cheilostomata - Membraniporidae
Cupuladria canariensis
Cupuladria canariensis
poorly preserved
 Cheilostomata - Microporidae
Cupularia umbellata
Cupularia umbellata
poorly preserved
Scaphopoda
 Gadilida - Gadilidae
Cadulus caronensis n. sp.
Cadulus caronensis n. sp. Mansfield 1925 tusk shell
Gastropoda
 Heterostropha - Architectonicidae
Architectonica sp.
Architectonica sp. Röding 1798 sundial
poorly preserved; juvenile
 Trochoidea - Trochidae
Calliostoma rhombotum n. sp.
Calliostoma rhombotum n. sp. Mansfield 1925 top snail
 Cerithioidea - Cerithiidae
Bittium sp., "Clava sp." = Rhinoclavis
Bittium sp. Gray 1847 cerith snail
poorly preserved; 2 species
"Clava sp." = Rhinoclavis Swainson 1840 cerith snail
poorly preserved; juvenile
 Cerithioidea - Turritellidae
Turritella (Broderiptella) caronensis, "Turritella altilira" = Turritella (Bactrospira) altilira
Turritella (Broderiptella) caronensis Mansfield 1925 turret shell
SUBSPECIES: T. gatunensis caronensis n. subsp.
"Turritella altilira" = Turritella (Bactrospira) altilira Conrad 1857 turret shell
Includes T. altilira chiriquensis
 Neotaenioglossa - Calyptraeidae
Calyptraea sp.
Calyptraea sp. Lamarck 1799 slipper shell
poorly preserved
 Sorbeoconcha - Rissoidae
Rissoina sp.
Rissoina sp. d'Orbigny 1840 snail
poorly preserved
 Sorbeoconcha - Vitrinellidae
"Adeorbis guppyi n. sp." = Cyclostremiscus (Ponocyclus) guppyi
"Adeorbis guppyi n. sp." = Cyclostremiscus (Ponocyclus) guppyi Mansfield 1925 snail
 Neogastropoda - Columbellidae
Metulella caronensis n. sp., Strombina sp., "Strombina walli n. sp." = Sincola (Sincola) walli
Metulella caronensis n. sp. Mansfield 1925 snail
Strombina sp. Mörch 1852 snail
poorly preserved, fragment
"Strombina walli n. sp." = Sincola (Sincola) walli Mansfield 1925 snail
 Neogastropoda - Nassariidae
"Alectrion brassiensis n. sp." = Nassarius (Alectrion)
"Alectrion brassiensis n. sp." = Nassarius (Alectrion) snail
 Neogastropoda - Buccinidae
Phos trinitatensis n. sp.
Phos trinitatensis n. sp. Mansfield 1925 true whelk
 Neogastropoda - Mitridae
Mitra sp.
Mitra sp. Lamarck 1798 mitre shell
poorly preserved; juvenile
 Neogastropoda - Drilliidae
Drillia nitrina n. sp., Drillia tridadina n. sp., Drillia daditrina n. sp., Drillia pennyi n. sp., Drillia inniadda n. sp., "Drillia inadrina n. sp." = Syntomodrillia inadrina, "Drillia consors" = Hindsiclava consors
Drillia nitrina n. sp. Mansfield 1925 snail
Drillia tridadina n. sp. Mansfield 1925 snail
Drillia daditrina n. sp. Mansfield 1925 snail
Drillia pennyi n. sp. Mansfield 1925 snail
Includes D. pennyi acaria n. subsp.
Drillia inniadda n. sp. Mansfield 1925 snail
"Drillia inadrina n. sp." = Syntomodrillia inadrina Mansfield 1925 snail
"Drillia consors" = Hindsiclava consors Sowerby 1850 snail
SUBSPECIES: D. consors trinitatiensis n. subsp.
 Neogastropoda - Mangeliidae
"Drillia niaddrina n. sp." = Bellaspira niaddrina
"Drillia niaddrina n. sp." = Bellaspira niaddrina Mansfield 1925 snail
 Neogastropoda - Clathurellidae
Glyphostoma addina n. sp., Glyphostoma triniada n. sp., Glyphostoma caronensis n. sp.
Glyphostoma addina n. sp. snail
Glyphostoma triniada n. sp. Mansfield 1925 snail
Glyphostoma caronensis n. sp. Mansfield 1925 snail
 Neogastropoda - Terebridae
Terebra (Strioterebra) trinitatensis n. sp., Terebra (Strioterebra) brassoensis n. sp.
 Neogastropoda - Conidae
"Conus multiliratus" = Conasprelloides multiliratus
"Conus multiliratus" = Conasprelloides multiliratus Olsson 1922 cone shell
SUBSPECIES: C. multiliratus walli n. subsp.
 Neogastropoda - Turridae
"Turris brassoensis n. sp." = Gemmula machapoorensis
"Turris brassoensis n. sp." = Gemmula machapoorensis Maury 1925 turrid
 Neogastropoda - Borsoniidae
"Borsonia (Paraborsonia) brassoensis n. sp." = Paraborsonia brassoensis, Microdrillia trina n. sp.
"Borsonia (Paraborsonia) brassoensis n. sp." = Paraborsonia brassoensis Mansfield 1925 snail
Microdrillia trina n. sp. Mansfield 1925 snail
 Neogastropoda - Olividae
Olivella sp., Ancilla paralamellata n. sp.
Olivella sp. Swainson 1831 olive snail
poorly preserved; 2 species
Ancilla paralamellata n. sp. Mansfield 1925 olive snail
 Neogastropoda - Costellariidae
"Vexillum bristoli" = Uromitra bristoli
"Vexillum bristoli" = Uromitra bristoli Maury 1925 ribbed mitre
 Neogastropoda - Marginellidae
Marginella (Faba) bulbrooki n. sp., Marginella guaica
Marginella (Faba) bulbrooki n. sp. Mansfield 1925 margin shell
Marginella guaica Maury 1925 margin shell
 Neogastropoda - Muricidae
Typhis sp.
Typhis sp. Montfort 1810 murex snail
poorly preserved, fragment
 Neogastropoda - Cystiscidae
Marginella (Gibberula) trinitatensis n. sp.
Marginella (Gibberula) trinitatensis n. sp. Mansfield 1925 snail
 Sorbeoconcha - Vermetidae
Serpulorbis sp.
Serpulorbis sp. Sasso 1827 worm shell
poorly preserved; fragment
Malacostraca
 Decapoda - Portunidae
Callinectes sp.
Callinectes sp. Stimpson 1860 swimming crab
poorly preserved