USGS 8301 (Miocene of Trinidad and Tobago)

Where: Trinidad and Tobago (10.5° N, 61.2° W: paleocoordinates 9.9° N, 57.5° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Early/Lower Miocene (23.0 - 16.0 Ma)

• STRATIGRAPHIC RELATIONS: From unknown lithostratigraphic unit. THICKNESS: Unknown AGE: Stated to be "Lower Miocene" in text, but potentially could be younger in more recent revisions; an Early Miocene age is presently assigned. STRATIGRAPHIC POSITION: Unknown.

• bed-level stratigraphic resolution

Environment/lithology: marine; poorly lithified siliciclastic sediments

• SPECIFIC LITHOLOGY: Unknown, presumably siliciclastic. LITHIFICATION: Assumed to be poorly-lithified based 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 74925: 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
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium sp.
Dentalium sp. Linnaeus 1758 tusk shell
poorly preserved
Gastropoda
 Trochoidea - Liotiidae
Liotia machapoorensis
 Cerithioidea - Cerithiidae
Cerithium sp., "Clava sp." = Rhinoclavis
Cerithium sp. Bruguière 1789 cerith snail
poorly preserved
"Clava sp." = Rhinoclavis Swainson 1840 cerith snail
poorly preserved
 Cerithioidea - Turritellidae
Turritella machapoorensis, "Turritella aff. perattenuata" = Turritella (Bactrospira) perattenuata, Turritella caparonis
Turritella machapoorensis Maury 1925 turret shell
"Turritella aff. perattenuata" = Turritella (Bactrospira) perattenuata Heilprin 1886 turret shell
Turritella caparonis Maury 1925 turret shell
 Cerithioidea - Modulidae
Modulus tamanensis n. sp.
Modulus tamanensis n. sp. Maury 1925 snail
 Sorbeoconcha - Naticidae
Natica sp., Sinum sp., Eunaticina sp.
Natica sp. Scopoli 1777 moon snail
poorly preserved
Sinum sp. Röding 1798 moon snail
poorly preserved
Eunaticina sp. Fischer 1885 moon snail
poorly preserved
 Neogastropoda - Conidae
Conus sp.
Conus sp. Linnaeus 1758 cone shell
poorly preserved
 Neogastropoda - Olividae
Ancilla sp.
Ancilla sp. Lamarck 1799 olive snail
poorly preserved
 Sorbeoconcha - Vermetidae
Serpulorbis sp.
Serpulorbis sp. Sasso 1827 worm shell
poorly preserved