NMB #10730 - Grand Bay Fm (Carriacou): Middle Miocene, Grenada

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Scaphopoda - Dentaliida - Dentaliidae
Dentalium cf. uscarianum Olsson 1922
recombined as Fissidentalium uscarianum
Gastropoda - Heterostropha - Camaenidae
Pleurodonte (Pleurodonte) lehneri
Gastropoda - Heterostropha - Architectonicidae
Architectonica (Architectonica) nobilis (Röding 1798)
Subspecies: Architectonica (A.) nobilis karsteni
    = Architectonica kartseni
Landau and Marques da Silva 2010
Gastropoda - Neotaenioglossa - Calyptraeidae
Crucibulum sp. Schumacher 1817
Gastropoda - Ficidae
Ficus carriacouensis Trechmann 1935
Gastropoda - Neogastropoda - Olividae
Oliva (? Strephonella) delata Jung 1971
Oliva (? Omogymna) valens Jung 1971
Gastropoda - Neogastropoda - Buccinidae
Cymatophos glareosus Jung 1971
Gastropoda - Neogastropoda - Turridae
Polystira opulenta Jung 1971
Gastropoda - Neogastropoda - Conidae
Conus sp. Linnaeus 1758
Gastropoda - Naticidae
Polinices prolacteus
Bivalvia - Ostreida - Ostreidae
Ostrea sp. Linnaeus 1758
Bivalvia - Carditida - Carditidae
Cardita sp. Bruguière 1792
Anthozoa - Scleractinia - Pocilloporidae
Stylophora monticulosa Vaughan and Hoffmeister 1925
see common names

Geography
Country:Grenada
Coordinates: 12.5° North, 61.4° West (view map)
Paleocoordinates:12.2° North, 61.1° West
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period:Neogene Epoch:Miocene
10 m.y. bin:Cenozoic 5
Key time interval:Middle Miocene
Age range of interval:15.98000 - 11.63000 m.y. ago
Stratigraphy
Formation:Grand Bay
Local section:Point St Hilaire
Stratigraphic resolution:bed
Stratigraphy comments: 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.
Lithology and environment
Primary lithology: poorly lithified tuff
Includes fossils?Y
Lithology description: 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
Environment:transition zone/lower shoreface
Geology comments: 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.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Preservation of anatomical detail:good
Collection methods and comments
Collection methods:field collection,survey of museum collection
Reason for describing collection:taxonomic analysis
Museum repositories:NMB
Collection method comments: Naturhistorisches Museum, Basel, Switzerland.
Taxonomic list comments:Exhaustive for Mollusca. Later publications may list non-molluscan taxa from these units. These are not available at this time.
Metadata
Database number:58683
Authorizer:A. Hendy, W. Kiessling Enterer:A. Hendy, U. Merkel
Research group:marine invertebrate
Created:2006-02-20 10:28:46 Last modified:2013-11-25 13:37:23
Access level:the public Released:2006-02-20 10:28:45
Creative Commons license:CC BY
Reference information

Primary reference:
16650. P. Jung. 1971. Fossil mollusks from Carriacou, West Indies. Bulletins of American Paleontology 61(269):1-262 [A. Miller/A. Hendy]

Secondary references:

36423 B. Landau and C. Marques da Silva. 2010. Early Pliocene gastropods of Cubagua, Venezuela: Taxonomy, palaeobiogeography and ecostratigraphy. Palaeontos 19:1-221 [A. Hendy/A. Hendy]