. Bulletins of American paleontology. es 40-60 cm below surfaceGray mudParastarte Subfacies 80-100 cm below surfaceGray mudAnomalocardia Subfacies 100-117 cm below surfaceGray mudPlaya Biofacies cm below surfaceTransition from peat upward to mudEverglades Biofacies cm below surfacePeat (dated 1738 ± 270 yr)Everglades Biofacies cm below surfaceBrown peaty mudEverglades Biofacies 139-141 cm below surfaceBasal marlParastarte Subfacies Text-figure 36.—Description and abundance in the Rankin Bight Core. The scale on the left side of each graph is 0-70% (h
. Bulletins of American paleontology. es 40-60 cm below surfaceGray mudParastarte Subfacies 80-100 cm below surfaceGray mudAnomalocardia Subfacies 100-117 cm below surfaceGray mudPlaya Biofacies cm below surfaceTransition from peat upward to mudEverglades Biofacies cm below surfacePeat (dated 1738 ± 270 yr)Everglades Biofacies cm below surfaceBrown peaty mudEverglades Biofacies 139-141 cm below surfaceBasal marlParastarte Subfacies Text-figure 36.—Description and abundance in the Rankin Bight Core. The scale on the left side of each graph is 0-70% (horizontallines). The percentages are those of the taxa in the whole sample. The numbers 1-9 at the top of the upper graph represent the following: 1 —Terrestrial snails (Helisoma. Polygyra): 2—Fresh water snails (overwhelmingly Hydrobia): 3—Ceritludea costata: A—Polymesoda nmritima:5—Retiisa candei: 6—Anomalocardia auheriana: 7—Cehthiiim innscarunr. 8—Crepidida foriiicata: 9—Parastarte triqiiilra. 38 Bulletin 370. imiscamm (4) and Retusa (5) both show an increasingNorthern Biofacies proportion. The fauna of the interval 40-60 cm below the topof the core is dominated by Anomalocardia (6), withthe Key Playa Taxa (2 and 3) reduced by 50%. Thisindicates a spread of water over the earlier playa. Re-tusa (5) and Parastarte (7), both characteristic North-ern forms, are more common. The larger percentageof Anomalocardia as compared to Parastarte is defin-itive of the Anomalocardia Subfacies. hi the upper two samples, the water has becomeshallower, and Parastarte is the overwhelmingly Dom-inant Taxon, reaching over 60% of all specimens inthe sample from 20-40 cm. The top sample, however,also shows a quadrupling of Transennella conradina(8), indicating an increasing influence of what will be-come the Central Interior Biofacies if the advance ofBay flooding drives the Everglades still further short bars for Brachidontes (9) have beenincluded to sho
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