Back Rio Grande (locality 6) : Campanian, Jamaica

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Hippuritida - Antillocaprinidae
Bivalvia - Hippuritida - Hippuritidae
Barrettia sp. Woodward 1862
1 specimen
Bivalvia - Hippuritida - Radiolitidae
see common names

Geography
Country:Jamaica State/province:Portland
Coordinates: 18.1° North, 76.5° West (view map)
Paleocoordinates:
Time
Period: Cretaceous Epoch: Late Cretaceous
Stage: Campanian 10 m.y. bin: Cretaceous 7
Key time interval: Campanian
Age range of interval: 83.6 - 72.2 m.y. ago
Stratigraphy
Formation:Back Rio Grande Member:Upper limestone
Stratigraphic resolution:group of beds
Lithology and environment
Primary lithology: lithified "limestone"
Lithology description: Exposures within a fault zone about 1 km downstream of the main section (Fig. 1) show extensive limestones with abundant stylolites (localities 5 and 6). At least 25 m of limestone is exposed; it yields the same rudist assemblage (C. cubensis, D. krijneni sp. nov. and Barrettia sp. A) as the main exposures of the upper limestone member (Fig. 7). Krijnen et al. (1993, fig. 14, ‘‘Back Rio Grande Stony River’’) recorded Pseudorbitoides rutteni and Vaughanina cubensis from our locality 5 and attributed the limestones at this exposure to the Rio Grande Formation.
Environment:reef, buildup or bioherm
Taphonomy
Modes of preservation:body,shellbed
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection,observed (not collected)
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:116616
Authorizer:M. Aberhan Enterer:D. Wellmanns
Modifier:D. Wellmanns Research group:marine invertebrate
Created:2011-09-09 22:32:36 Last modified:2025-02-22 15:12:02
Access level:authorizer only Released:2016-09-09 22:32:36
Creative Commons license:CC0
Reference information

Primary reference:
37560. S. F. Mitchell and R. Ramsook. 2009. Rudist bivalve assemblages from the Back Rio Grande Formation (Creaceous: Campanian) of Jamaica and their stratigraphic significance. Cretaceous Research 30:307-321 [M. Aberhan/D. Wellmanns]