PBDB Collection

NMB #10109 - 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 58674: 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

Gastropoda
Neotaenioglossa - Calyptraeidae	Crucibulum sp. Crucibulum sp. Schumacher 1817 slipper shell
Sorbeoconcha - Vermetidae	Petaloconchus sp. Petaloconchus sp. Lea 1843 worm shell
Sorbeoconcha - Cypraeidae	Macrocypraea aff. zebra Macrocypraea aff. zebra Linnaeus 1758 cowry
Sorbeoconcha - Triviidae	"Trivia cf. suffusa" = Niveria suffusa "Trivia cf. suffusa" = Niveria suffusa Gray 1827 snail
Sorbeoconcha - Ficidae	Ficus carriacouensis Ficus carriacouensis Trechmann 1935 fig shell
Neogastropoda - Buccinidae	? Metaphos "sp. A", Cymatophos glareosus ? Metaphos "sp. A" Olsson 1964 true whelk Cymatophos glareosus Jung 1971 true whelk
Neogastropoda - Fasciolariidae	Fusinus "sp. A" Fusinus "sp. A" Rafinesque 1815 snail
Neogastropoda - Olividae	Jaspidella ? balba, Oliva (? Omogymna) valens, Oliva (? Strephonella) delata, "Oliva (Oliva) cf. cristobalcoloni" = Oliva cristobalcoloni Jaspidella ? balba Jung 1971 olive snail Oliva (? Omogymna) valens Jung 1971 olive snail Oliva (? Strephonella) delata Jung 1971 olive snail "Oliva (Oliva) cf. cristobalcoloni" = Oliva cristobalcoloni Maury 1917 olive snail
Neogastropoda - Mitridae	Mitra cf. limata Mitra cf. limata Jung 1971 mitre shell
Neogastropoda - Borsoniidae	Paraborsonia varicosa Paraborsonia varicosa Sowerby 1850 snail
Neogastropoda - Turridae	Polystira opulenta Polystira opulenta Jung 1971 turrid
Neogastropoda - Terebridae	Strioterebrum sp. Strioterebrum sp. Sacco 1891 auger snail
Neogastropoda - Conidae	Conus sp., Conus aff. tallis, Conus cf. imitator, Conus cf. aemulator, Conus cf. consobrinus Conus sp. Linnaeus 1758 cone shell Conus aff. tallis cone shell Conus cf. imitator Brown and Pilsbry 1911 cone shell Conus cf. aemulator Brown and Pilsbry 1911 cone shell Conus cf. consobrinus Sowerby 1850 cone shell
Cerithioidea - Turritellidae	Turritella sp., Turritella (Bactrospira) altilira Turritella sp. Lamarck 1799 turret shell Turritella (Bactrospira) altilira Conrad 1857 turret shell Subspecies: Turritella (Bactrospira) altilira altilira
Pleurotomarioidea - Pleurotomariidae	Pleurotomaria (Perotrochus) cf. quoyana Pleurotomaria (Perotrochus) cf. quoyana snail
Scaphopoda
Dentaliida - Dentaliidae	"Dentalium cf. uscarianum" = Fissidentalium uscarianum "Dentalium cf. uscarianum" = Fissidentalium uscarianum Olsson 1922 tusk shell
Bivalvia
Carditida - Crassatellidae	Eucrassatella sp. Eucrassatella sp. Iredale 1924 clam
Carditida - Carditidae	Venericardia sp. Venericardia sp. Lamarck 1801 clam
Pectinida - Pectinoidae	"Lyropecten (Nodipecten) sp." = Nodipecten "Lyropecten (Nodipecten) sp." = Nodipecten Dall 1898 scallop
Ostreida - Ostreidae	Ostrea sp. Ostrea sp. Linnaeus 1758 oyster
Arcida - Glycymerididae	Glycymeris cf. secticostata Glycymeris cf. secticostata clam
Anthozoa
Scleractinia - Pocilloporidae	Stylophora cf. imperatoris Stylophora cf. imperatoris Vaughan 1919 stony coral