NMB #10109 - Grand Bay Fm (Carriacou): Middle Miocene, Grenada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Anthozoa
- Scleractinia
- Pocilloporidae
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Stylophora cf. imperatoris
Vaughan 1919
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Scaphopoda
- Dentaliida
- Dentaliidae
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Dentalium cf. uscarianum
Olsson 1922
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| recombined as Fissidentalium uscarianum | ||||||||||
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Bivalvia
- Carditida
- Carditidae
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Venericardia sp.
Lamarck 1801
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Bivalvia
- Carditida
- Crassatellidae
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Eucrassatella sp.
Iredale 1924
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Bivalvia
- Pectinida
- Pectinidae
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Lyropecten (Nodipecten) sp.
(Dall 1898)
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| original and current combination Nodipecten | ||||||||||
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Bivalvia
- Ostreida
- Ostreidae
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Ostrea sp.
Linnaeus 1758
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Bivalvia
- Arcida
- Glycymerididae
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Glycymeris cf. secticostata
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Gastropoda
- Pleurotomariidae
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Pleurotomaria (Perotrochus) cf. quoyana
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Gastropoda
- Vermetidae
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Petaloconchus sp.
Lea 1843
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Gastropoda
- Ficidae
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Ficus carriacouensis
Trechmann 1935
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Gastropoda
- Cypraeidae
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Macrocypraea aff. zebra
(Linnaeus 1758)
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Gastropoda
- Triviidae
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Trivia cf. suffusa
(Gray 1827)
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| recombined as Niveria suffusa | ||||||||||
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Gastropoda
- Neogastropoda
- Olividae
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Jaspidella ? balba
Jung 1971
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Oliva (? Omogymna) valens
Jung 1971
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Oliva (? Strephonella) delata
Jung 1971
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Oliva (Oliva) cf. cristobalcoloni
(Maury 1917)
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| original and current combination Oliva cristobalcoloni | ||||||||||
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Gastropoda
- Neogastropoda
- Mitridae
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Mitra cf. limata
Jung 1971
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Gastropoda
- Neogastropoda
- Buccinidae
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Cymatophos glareosus
Jung 1971
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? Metaphos informal sp. A
Olsson 1964
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Gastropoda
- Neogastropoda
- Fasciolariidae
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Fusinus informal sp. A
Rafinesque 1815
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Gastropoda
- Neogastropoda
- Turridae
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Polystira opulenta
Jung 1971
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Gastropoda
- Neogastropoda
- Conidae
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Conus sp.
Linnaeus 1758
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Conus aff. tallis
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Conus cf. aemulator
Brown and Pilsbry 1911
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Conus cf. imitator
Brown and Pilsbry 1911
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Conus cf. consobrinus
Sowerby 1850
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Gastropoda
- Neogastropoda
- Terebridae
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Strioterebrum sp.
Sacco 1891
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Gastropoda
- Neogastropoda
- Borsoniidae
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Paraborsonia varicosa
(Sowerby 1850)
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Gastropoda
- Turritellidae
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Turritella sp.
Lamarck 1799
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Turritella (Bactrospira) altilira
(Conrad 1857)
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| Subspecies: Turritella (Bactrospira) altilira altilira | ||||||||||
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Gastropoda
- Neotaenioglossa
- Calyptraeidae
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Crucibulum sp.
Schumacher 1817
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| 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: | 58674 | ||
| Authorizer: | A. Hendy, W. Kiessling | Enterer: | A. Hendy, U. Merkel | Research group: | marine invertebrate |
| Created: | 2006-02-20 10:22:19 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | the public | Released: | 2006-02-20 10:22:18 |
| 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] |