Mitchell, Simon F.
Author Affiliation, Ana.
Department of Geography and Geology
The fauna of Jamaican cretaceous coral reefs
Jackson, Trevor A.
Caribbean geology into the third millennium: Transactions of the fifteenth Caribbean Geological Conference
Place of Publication
The University of the West Indies Press
Date of Publication
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The coral patch reefs in the Guinea Corn Formation (upper Campanian?-Maastrichtian, Upper Cretaceous) of the Central Inlier, Jamaica, are described. They consist of in situ corals and mounds (rudstones) of coral debris derived from the patch reefs. The patch reef biota is dominated by corals as primary frame builders. Secondary frame builders include: calcareous red algae, rare rudist bivalves (Hippuruties), bryozoans, serpulids and thecidellinid brachiopods. Reef bioerosion was caused by numerous boring organisms including lithophagid bivalves, predatory gastropods, and probably serpulid worms and sponges. Reef dwellers included regular echinoids, comatulid crinoids and rarer micromorphic brachiopods, crabs, epifaunal bivalves, gastropods, and starfish. The fauna of Jamaican Cretaceous coral patch reefs was diverse, similar to modern Caribbean reefs at the higher taxonomic level, and contrasted significantly with the low-diversity rudist-dominated limestone facies of the Jamaican Upper Cretaceous.....