. Bulletins of American paleontology. Text-ligLire 16.—MostD. Baihatia cancellaria. I of the Grecian R(canwa. F. Cerithiopsis gr MoLLUSK Shells in Florida Bay: Shaw 25. Text-figure 17.—Mosl important taxa of the Gulf Biofacies. A. Corhiil, DOMINANT TAXA: Five taxa make up the firsthalf of this fauna: Corbula swiftiana () (Text-fig. 17A), Chione canceUata () (Text-fig. lOB).Transennella stimpsoni () (Text-fig. IOC), Nii-cula proxima () (Text-fig. 17C) and Nucitlanciacuta () (Text-fig. 178). KEY TAXA: Chione canceUata and Transennellastimpsoni occur in almost all parts of
. Bulletins of American paleontology. Text-ligLire 16.—MostD. Baihatia cancellaria. I of the Grecian R(canwa. F. Cerithiopsis gr MoLLUSK Shells in Florida Bay: Shaw 25. Text-figure 17.—Mosl important taxa of the Gulf Biofacies. A. Corhiil, DOMINANT TAXA: Five taxa make up the firsthalf of this fauna: Corbula swiftiana () (Text-fig. 17A), Chione canceUata () (Text-fig. lOB).Transennella stimpsoni () (Text-fig. IOC), Nii-cula proxima () (Text-fig. 17C) and Nucitlanciacuta () (Text-fig. 178). KEY TAXA: Chione canceUata and Transennellastimpsoni occur in almost all parts of the Bay, butneither approaches the abundance seen in the Gulf T—- conchic CH^Nt^El SANDY KEY V >. V Text-tigure 18.—Map of the Gulf Biofacies. Biofacies. The remaining taxa are more striking be-cause they are uncommon elsewhere. A sample withnumerous Corbula. Nucula and Nuculana can safelybe identified with the Gulf Biofacies. BIOFACIES STRUCTURE: The fact that only fivetaxa make up half of this assemblage is clear indicationthat this is also a right-skewed fauna. Of its 178 taxa,73 () fall in the final one percent. DISTRIBUTION: As mentioned above
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