USGS 9224 (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 74956: 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).
Show authors, comments, and common names
Gastropoda
 Heterostropha - Pyramidellidae
Turbonilla sp.
Turbonilla sp. Risso 1826 snail
 Cerithioidea - Cerithiidae
Bittium sp.
Bittium sp. Gray 1847 cerith snail
 Cerithioidea - Turritellidae
Vermicularia sp.
Vermicularia sp. Lamarck 1799 turret shell
 Neogastropoda - Cystiscidae
"Marginella (Closia) lachrimula" = Pugnus lachrimula
"Marginella (Closia) lachrimula" = Pugnus lachrimula Gould 1862 snail
 Neogastropoda - Buccinidae
Pseudoliva guppyi n. sp.
Pseudoliva guppyi n. sp. Mansfield 1925 true whelk
 Neogastropoda - Drilliidae
Drillia aff. riogurabonis
Drillia aff. riogurabonis Maury 1917 snail
 Lepetellida - Fissurellidae
"Fissuridea sp." = Diodora
"Fissuridea sp." = Diodora Gray 1821 snail
Gymnolaemata
 Cheilostomata - Microporidae
Cupularia sp.
Cupularia sp. Canu and Bassler
 Cheilostomata - Membraniporidae
Acanthodesia savartii, Cupuladria canariensis