NMB #10812 - 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 58671: authorized by Austin Hendy, entered by Austin Hendy on 18.02.2006

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
unclassified
  -
Hindisclava consors
Gastropoda
 Sorbeoconcha - Ficidae
Ficus carriacouensis
Ficus carriacouensis Trechmann 1935 fig shell
 Sorbeoconcha - Cassidae
"Bathygalea (Miogalea) famulans" = Echinophoria famulans
"Bathygalea (Miogalea) famulans" = Echinophoria famulans Jung 1971 snail
 Neogastropoda - Costellariidae
"? Pusia sp." = Vexillum (Pusia), Fusiturricula sp.
"? Pusia sp." = Vexillum (Pusia) Swainson 1840 ribbed mitre
Fusiturricula sp. Woodring 1928 ribbed mitre
= Trechmann's Pleurotoma sp.
 Neogastropoda - Terebridae
Terebra (Myurellina) ? insulae, Terebra (? Myurellina) sp.
Terebra (Myurellina) ? insulae Jung 1971 auger snail
Terebra (? Myurellina) sp. Bartsch 1923 auger snail
 Neogastropoda - Borsoniidae
Paraborsonia varicosa, Paraborsonia laeta
Paraborsonia varicosa Sowerby 1850 snail
Paraborsonia laeta Jung 1971 snail
 Neogastropoda - Conidae
Conus cf. consobrinus
Conus cf. consobrinus Sowerby 1850 cone shell
 Neogastropoda - Buccinidae
? Antillophos sp.
? Antillophos sp. Woodring 1928 true whelk
 Neogastropoda - Mitridae
"Mitra aff. mauryae" = Subcancilla mauryae
"Mitra aff. mauryae" = Subcancilla mauryae Anderson 1929 mitre shell
 Epitonioidea - Epitoniidae
Epitonium (Epitonium) sp.
Epitonium (Epitonium) sp. Röding 1798 wentletrap
 Pseudomelanoidea - Pseudomelaniidae
Crassispira sp.
Crassispira sp. Swainson 1840 snail
 Thecosomata - Cavoliniidae
Vaginella sp.
Vaginella sp. Daudin 1800 snail
 Heterostropha - Architectonicidae
"Architectonica (Architectonica) nobilis" = Architectonica nobilis
"Architectonica (Architectonica) nobilis" = Architectonica nobilis Röding 1798 sundial
Subspecies: A. (A.) nobilis karsteni
Bivalvia
 Pectinida - Pectinoidae
Palliolum (Delectopecten) antillarum
Caritoma antillarum
  -
Caritoma antillarum