NMB #10707 - Grand Bay Fm (Carriacou) (Miocene of Grenada)

Where: Grenada (12.5° N, 61.4° W: paleocoordinates 12.2° N, 61.1° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Grand Bay Formation, Middle Miocene (16.0 - 11.6 Ma)

• The principal, nominal sedimentary units of the mid-Tertiary succession of Carriacou are the Belmont Formation (lower Miocene), Kendeace Formation (lower Miocene), Carriacou Formation (middle Miocene) and Grand Bay Formation (middle Miocene). The collection originates from sandy facies of the Grand Bay Fm. Jung (1971) assigns this a Middle Miocene age based on faunal affinities with other circum-Caribbean units.

• bed-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; poorly lithified tuff

• Most collections of the Grand Bay Fm may have lived in inner shelf depths of 20-50 m, although some may be deeper, or at least have had shallow-water fauna transported offshore. The fauna of the tuffaceous facies appears to have been deposited in slightly shallower water and is here assigned a "transition zone/lw shoreface" environment.
• Tuffaceous facies. From specimens presented in photgraphic plates most material from Carriacou appears to be from poorly-lithified as opposed to cemented, or unconsolidated sediments. No information provided in text

Size class: macrofossils

Reposited in the NMB

• Naturhistorisches Museum, Basel, Switzerland.

Primary reference: P. Jung. 1971. Fossil mollusks from Carriacou, West Indies. Bulletins of American Paleontology 61(269):1-262 [A. Miller/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 58679: authorized by Austin Hendy, entered by Austin Hendy on 20.02.2006, edited by Uta Merkel

Creative Commons license: CC BY (attribution)

Taxonomic list

• Exhaustive for Mollusca. Later publications may list non-molluscan taxa from these units. These are not available at this time.
Show authors, comments, and common names
Bivalvia
 Pectinida - Pectinoidae
"Lyropecten (Nodipecten) sp." = Nodipecten
"Lyropecten (Nodipecten) sp." = Nodipecten Dall 1898 scallop
Gastropoda
 Epitonioidea - Epitoniidae
Sthenorytis grenadinarum
 Sorbeoconcha - Ficidae
Ficus carriacouensis
Ficus carriacouensis Trechmann 1935 fig shell
 Neogastropoda - Buccinidae
Cymatophos glareosus
Cymatophos glareosus Jung 1971 true whelk
 Neogastropoda - Conidae
Conus sp.
Conus sp. Linnaeus 1758 cone shell
 Neogastropoda - Olividae
Oliva (? Strephonella) delata
Oliva (? Strephonella) delata Jung 1971 olive snail
 Neogastropoda - Harpidae
Morum (Cancellomorum) coxi
Morum (Cancellomorum) coxi Trechmanni 1935 snail
 Sorbeoconcha - Tonnidae
Malea cf. camura
Malea cf. camura Guppy 1866 tun shell
 Sorbeoconcha - Naticidae
Sinum gabbi
Sinum gabbi Brown and Pilsbry 1913 moon snail
Anthozoa
 Scleractinia - Flabellidae
Flabellidae indet., Flabellum ex gr. pavoninum
Flabellidae indet. Bourne 1905 stony coral
Flabellum ex gr. pavoninum Lesson 1831 stony coral
 Scleractinia - Merulinidae
? Cladocora sp.
? Cladocora sp. Ehrenberg 1834 stony coral