NMB #10710 - 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. Collection #11710 orriginates from a graded unit which as a maximum thickness of 1.5 m and includes components of volcanic origin.

• bed-level stratigraphic resolution

Environment/lithology: offshore; poorly lithified, volcaniclastic 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 58667: 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.
 Diptera - Xylophagidae
? Xylophaga sp. Turton 1822 fly
 Arcida - Limopsidae
Limopsis grenadinarum Jung 1971 clam
 Pectinida - Pectinoidae
? Spondylus sp. Linnaeus 1758 scallop
Chlamys sp. Röding 1798 scallop
 Ostreida - Ostreidae
Ostrea sp. Linnaeus 1758 oyster
 Cardiida - Glossidae
 Cardiida - Veneridae
? Pitar sp. Römer 1857 venus clam
 Cardiida - Donacidae
? Donax sp. Linnaeus 1758 clam
 Ptenoglossa - Epitoniidae
Scalina cf. kendacensis Jung 1971 wentletrap
 Thecosomata - Cavoliniidae
Vaginella sp. Daudin 1800 snail
 Opisthobranchia - Cylichnidae
? Cylichnella sp. Gabb 1873 snail
Scaphander sp. Monfort 1810 snail
 Neogastropoda - Olividae
? Jaspidella balba Jung 1971 olive snail
Oliva (? Strephonella) delata Jung 1971 olive snail
 Neogastropoda -
Mitratoma insularum Jung 1971 snail
 Neogastropoda - Buccinidae
? Cymatophos sp. Pilsbry and Olsson 1941 true whelk
Cymatophos glareosus Jung 1971 true whelk
Colubraria sp. Schumacher 1817 true whelk
? Metaphos "sp. A" Olsson 1964 true whelk
 Neogastropoda - Fasciolariidae
Fusinus sp. Rafinesque 1815 snail
 Neogastropoda - Mitridae
? Scabricola sp. Swainson 1840 mitre shell
Mitra "sp. A" Lamarck 1798 mitre shell
Mitra sp. Lamarck 1798 mitre shell
Mitra limata Jung 1971 mitre shell
 Neogastropoda - Volutidae
Enaeta sp., "Enaeta trechmanni" = Lyria (Enaeta) trechmanni
Enaeta sp. Adams and Adams 1853 volute
"Enaeta trechmanni" = Lyria (Enaeta) trechmanni Jung 1971 volute
 Neogastropoda - Costellariidae
Conomitra lehneri Jung 1971 ribbed mitre
"? Pusia sp." = Vexillum (Pusia) Swainson 1840 ribbed mitre
Uromitra sp. Bellardi 1887 ribbed mitre
 Neogastropoda - Muricidae
Pterynotus sp. Swainson 1833 mustached bat
 Neogastropoda - Harpidae
Morum (Cancellomorum) coxi Trechmanni 1935 snail
 Neogastropoda - Cochlespiridae
Aforia aff. ecuadoriana Olsson 1964 aforia
 Neogastropoda - Drilliidae
"Crassispira cf. henekeni" = Hindsiclava henekeni
"Crassispira cf. henekeni" = Hindsiclava henekeni Sowerby 1850 snail
 Neogastropoda - Turridae
Knefastia sp. Dall 1919 turrid
= Trechmann's Pleurotoma sp.
Fusiturricula sp. Woodring 1928 turrid
= Trechmann's Pleurotoma sp.
Crassispira sp. Swainson 1840 turrid
Polystira opulenta Jung 1971 turrid
 Neogastropoda -
Glyphostoma sp. Gabb 1872 snail
 Neogastropoda - Borsoniidae
Paraborsonia laeta Jung 1971 snail
Paraborsonia varicosa Sowerby 1850 snail
 Neogastropoda - Conidae
Conus sp. Linnaeus 1758 cone shell
Conus aemulator Brown and Pilsbry 1911 cone shell
Conus aff. talis Jung 1965 cone shell
Conus cf. consobrinus Sowerby 1850 cone shell
Conus cf. imitator Brown and Pilsbry 1911 cone shell
 Neogastropoda - Terebridae
Strioterebrum sp. Sacco 1891 auger snail
Terebra (Myurellina) insulae Jung 1971 auger snail
 Ficoidea - Ficidae
Ficus cf. carriacouensis Trechmann 1935 fig shell
 Vanikoroidea - Hipponicidae
Hipponix sp. Defrance 1819 hoof shell
 Vanikoroidea - Eulimidae
Niso sp. Risso 1826 snail
 Velutinoidea - Triviidae
Trivia islahispaniolae Maury 1917 snail
 Naticoidea - Naticidae
"Natica (Naticarius) sp." = Naticarius, Sinum gabbi, Polinices prolaceteus
"Natica (Naticarius) sp." = Naticarius Dumeril 1806 moon snail
Sinum gabbi Brown and Pilsbry 1913 moon snail
 Vermetoidea - Vermetidae
Vermetus sp. Daudin 1800 worm shell
 Tonnoidea - Bursidae
Bursa rugosa Sowerby 1835 frog shell
 Tonnoidea - Cassidae
Cypraecassis sp., "Bathygalea (Miogalea) famulans" = Echinophoria famulans
Cypraecassis sp. Stuchburry 1837 snail
"Bathygalea (Miogalea) famulans" = Echinophoria famulans Jung 1971 snail
 Architectonicoidea - Architectonicidae
"Architectonica (Architectonica) nobilis" = Architectonica nobilis
"Architectonica (Architectonica) nobilis" = Architectonica nobilis Röding 1798 sundial
Subspecies A. (A.) nobilis karsteni
 Fissurelloidea - Fissurellidae
? Diodora sp. Gray 1821 snail
 Trochoidea - Trochidae
Calliostoma sp. Swainson 1840 top snail
? Calliostoma tarltonense Jung 1971 top snail
 Dentaliida - Dentaliidae
"Dentalium cf. uscarianum" = Fissidentalium uscarianum, Dentalium sp.
"Dentalium cf. uscarianum" = Fissidentalium uscarianum Olsson 1922 tusk shell
Dentalium sp. Linnaeus 1758 tusk shell
 Scleractinia - Faviidae
? Cladocora sp. Ehrenberg 1834 stony coral
 Scleractinia - Caryophylliidae
Stephanocyathus sp. Seguenza 1864 stony coral
Deltocyathus sp. Milne-Edwards and Haime 1848 stony coral
 Scleractinia - Flabellidae
Flabellum "sp. 2" Lesson 1831 stony coral
Flabellum ex gr. pavoninum Lesson 1831 stony coral
Caritoma antillarum