USGS 9195 (Miocene of Trinidad and Tobago)

Where: Trinidad and Tobago (10.5° N, 61.2° W: paleocoordinates 10.3° N, 59.8° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Late/Upper Miocene (11.6 - 5.3 Ma)

• STRATIGRAPHIC RELATIONS: From unknown lithostratigraphic unit. THICKNESS: Unknown AGE: Stated to be "Upper Miocene" in text, but potentially could be younger in more recent revisions; a Late Miocene age is assigned here. STRATIGRAPHIC POSITION: Unknown position.

• bed-level stratigraphic resolution

Environment/lithology: marine; unlithified siliciclastic sediments

• ENVIRONMENT: No environmental data reported.
• SPECIFIC LITHOLOGY: Unknown lithology, presumably siliciclastic. LITHIFICATION: Assumed to be unlithfied based on figured specimes (largely 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 74955: authorized by Austin Hendy, entered by Austin Hendy on 08.09.2007

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. Byrozoans identified by Bassler (USNM).
 Neogastropoda - Olividae
Oliva cylindrica Sowerby 1850 olive snail
 Neogastropoda -
"Ancilla caroniana" = Eburna caroniana
"Ancilla caroniana" = Eburna caroniana Maury 1925 snail
Includes: Ancilla caroniana springvalensis n. subsp.
 Neogastropoda - Buccinidae
"Solenosteira semiglobosa" = Solenosteira (Solenosteira) cochlearis
"Solenosteira semiglobosa" = Solenosteira (Solenosteira) cochlearis Guppy 1873 true whelk
 Neogastropoda - Cancellariidae
 Neogastropoda - Cystiscidae
"Marginella (Persicula) propeobesa n. sp." = Persicula propeobesa
"Marginella (Persicula) propeobesa n. sp." = Persicula propeobesa Mansfield 1925 snail
 Neogastropoda - Mitridae
Subcancilla couvensis Maury 1925 mitre shell
SUBSPECIES: M. longa couvensis
 Neogastropoda - Marginellidae
"Marginella calypsonis" = Prunum calypsonis, "Marginella springvalensis" = Prunum springvalensis
"Marginella calypsonis" = Prunum calypsonis Maury 1925 margin shell
"Marginella springvalensis" = Prunum springvalensis Maury 1925 margin shell
 Neogastropoda - Turridae
"Turricula springvaleensis n. sp." = Fusiturricula springvaleensis
"Turricula springvaleensis n. sp." = Fusiturricula springvaleensis Mansfield 1925 turrid
 Neogastropoda - Conidae
"Conus springvalensis n. sp." = Conus imitator springvalensis
"Conus springvalensis n. sp." = Conus imitator springvalensis Mansfield 1925 cone shell
 Naticoidea - Naticidae
Natica youngi, "Natica canrena" = Naticarius canrena
Natica youngi Maury 1917 moon snail
"Natica canrena" = Naticarius canrena Linnaeus 1758 moon snail
 Vermetoidea - Vermetidae
"Petaloconchus alcimus n. sp." = Petaloconchus sculpturatus alcimus
"Petaloconchus alcimus n. sp." = Petaloconchus sculpturatus alcimus Mansfield 1925 worm shell
 Sorbeoconcha - Turritellidae
Vermicularia sp. Lamarck 1799 turret shell
"Turritella planigyrata" = Turritella (Broderiptella) planigyrata Guppy 1867 turret shell
 Cheilostomata - Calloporidae
 Ctenostomata - Terebriporidae