NMB #10716 - 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: offshore; poorly lithified sandstone

• 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.
• Sandstone 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 58668: authorized by Austin Hendy, entered by Austin Hendy on 18.02.2006, 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.
 Ostreida - Ostreidae
Ostrea sp. Linnaeus 1758 oyster
 Ptenoglossa - Epitoniidae
 Neogastropoda - Olividae
Oliva (? Strephonella) delata Jung 1971 olive snail
 Neogastropoda - Buccinidae
Cymatophos glareosus Jung 1971 true whelk
 Neogastropoda - Drilliidae
? Agladrillia sp. Woodring 1928 snail
 Neogastropoda - Turridae
Polystira opulenta Jung 1971 turrid
 Neogastropoda - Borsoniidae
Paraborsonia varicosa Sowerby 1850 snail
 Neogastropoda - Conidae
Conus sp. Linnaeus 1758 cone shell
Conus aff. talis Jung 1965 cone shell
 Neogastropoda - Terebridae
Strioterebrum sp. Sacco 1891 auger snail
 Ficoidea - Ficidae
Ficus carriacouensis Trechmann 1935 fig shell
 Naticoidea - Naticidae
 Xenophoroidea - Xenophoridae
Xenophora sp. Fischer von Waldheim 1807 carrier shell
 Tonnoidea - Cassidae
"Bathygalea (Miogalea) famulans" = Echinophoria famulans
"Bathygalea (Miogalea) famulans" = Echinophoria famulans Jung 1971 snail
 Trochoidea - Trochidae
Calliostoma sp. Swainson 1840 top snail
? Calliostoma tarltonense Jung 1971 top snail
 Scleractinia - Caryophylliidae
Caryophylliidae indet. Gray 1847 stony coral
Desmophyllum sp. Ehrenberg 1834 stony coral
 Scleractinia - Flabellidae
Flabellum "sp. 1" Lesson 1831 stony coral