Bay and shoreface benthic communities in the Lower Cretaceous
Article first published online: 9 OCT 2007
Volume 7, Issue 4, pages 315–330, October 1974
How to Cite
SCOTT, R. W. (1974), Bay and shoreface benthic communities in the Lower Cretaceous. Lethaia, 7: 315–330. doi: 10.1111/j.1502-3931.1974.tb00907.x
- Issue published online: 9 OCT 2007
- Article first published online: 9 OCT 2007
- 6th September 1973.
Lower Cretaceous marine rocks exposed in New Mexico, southcastcrn Colorado, Oklahoma, and Kansas contain well-preserved faunal assemblages that formed either as in-place, disturbed-neighborhood, or transported assemblages. Five faunal associations characterize lithofacies of the bay-to-shoreface depositional model and possess uniquc structures. The Nucula-Nuculana association represents a speciediverse, infaunal detritus-suspension community occupying the open-bay muddy substrate. The Corbula-Breviarca association was a species-dominant, infaunal suspension feeding community on the lower shoreface. The Texigryphaea-Lopha community formed biostromes on the shoreface. The mid-shoreface supported a species-diverse, infaunol suspension feeding community of Scabrotrigonia and Turritella. The Arenicolites trace fossil association characterizes the upper shoreface-beach habitat.