Back Rio Grande (locality 3) (Cretaceous of Jamaica)

Where: Portland , Jamaica (18.1° N, 76.5° W: paleocoordinates 19.4° N, 64.5° W)

• coordinate estimated from map

When: Upper limestone Member (Back Rio Grande Formation), Campanian (83.6 - 72.1 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified limestone and lithified volcaniclastic

• This member comprises at least 9 m of cemented limestones

•with common stylolites, and is exposed on the banks and within

•the river at localities 3 and 4 (Fig. 1). Rudists are common in some

•beds and include C. cubensis and D. krijneni sp. nov. (Fig. 6). At

•locality 4 (Fig. 1), the stylolite-bearing limestones contain Barrettia

•sp. A and Titanosarcolites sp. A in the same bed (Fig. 6).

Size class: macrofossils

Preservation: shellbed

Primary reference: 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]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 116618: authorized by Martin Aberhan, entered by Daniel Wellmanns on 09.09.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Bivalvia
 Hippuritida - Hippuritidae
Barrettia sp.
Barrettia sp. Woodward 1862 rudist
 Hippuritida - Antillocaprinidae
Antillosarcolites cf. macgillavryi, Titanosarcolites sp.
Titanosarcolites sp. Trechmann 1924 rudist