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By Edward J. Petuch

"Detailing 3 marine molluscan faunal provinces (Carolinian, Caribbean, and Brazilian), this quantity examines the distribution and evolutionary styles of the marine mollusks of the tropical and subtropical areas of the western Atlantic Ocean. It additionally covers the paleobiogeography of the tropical Americas, discussing the ancestral biogeographical areas that gave upward push to the new provincial and subprovincial Read more...

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Having evolved in the Caloosahatchian Paleoprovince, this large and diverse family has always been confined to eastern North America and the Gulf of Mexico and can be considered to be, collectively, the single most characteristic Carolinian molluscan taxon. Over 120 busyconid species and 12 genera are known from the fossil record (Oligocene to Pleistocene) of the eastern United States, and 17 living species and subspecies and six genera are now known from the Carolinian Province (see Petuch, 1994, 2004).

5 mm. Subsequent research showed that the reef systems were not unique to North Carolina but extended southward along the edge of the continental shelf as far as Florida. Because the continental shelf off the Carolinas and Georgia is so wide, these northern reefs are as much as 70 miles (120 km) offshore and are rarely, if ever, visited by researchers or divers. I was the first to publish about the molluscan fauna associated with these offshore coral reefs (Petuch, 1972, 1974a), based on a compilation of data collected in 1971 during my cruise on the Duke University research vessel R/­V Eastward.

The eastern Florida section of the Georgian Subprovince, from Palm Beach in the south to St. 9). This classic Florida species ranges from St. Augustine, around Florida Bay, and northward to Mobile Bay, Alabama, and has evolved six different varieties or subspecies that occur in separate areas of the Suwannean, Floridian, and southern Georgian Subprovinces (Petuch, 2004; Petuch and Sargent, 2012). 9) are restricted to intertidal lagoonal environments along eastern and northeastern Florida and include the following: Melongena (Rexmela) corona sprucecreekensis (St.

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