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Presentation
Evolution, Dispersal, and Habitat Preference of Basilosaurus (Mammalia: Cetacea) in the southeastern United States: New Evidence from the Eocene of Southwest Georgia
Oral Presentation at the 62nd Annual Meeting of the Southeastern Section of the Geological Society of America (2013)
  • Kathlyn M. Smith, Georgia Southern University
  • Alexander K. Hastings, Georgia Southern University
  • Ryan M. Bebej, Calvin College
Abstract
Archaeocetes are primitive cetaceans that originated during the early Eocene in Indo-Pakistan. By the end of the Eocene, archaeocetes were distributed worldwide. Semiaquatic protocetid archaeocetes were the first to reach North America during the early middle Eocene, followed by fully aquatic basilosaurids in the late Eocene. The archaeocete Basilosaurus reached lengths of up to 70 feet and is characterized by elongated posterior thoracic, lumbar, and anterior caudal vertebrae. Basilosaurus isis is known from Egypt and Jordan, whereas Basilosaurus cetoides is known principally from North America. The two taxa are distinguished mainly by the slightly larger size of B. cetoides. Most occurrences of Basilosaurus in North America are within the Gulf Coastal Plain. Fewer specimens have been found in the Atlantic Coastal Plain. In Georgia, there are only three confirmed reports of Basilosaurus, two of which are of skeletal fragments. Here we report a new specimen of
Keywords
  • Basilosaurus,
  • Archaeocetes,
  • Eocene,
  • Semiaquatic Protocetid,
  • Aquatic Basilosaurids,
  • Basilosaurus cetoides,
  • Basilosaurus isis,
  • North America,
  • Southeastern United States,
  • Gulf Coastal Plain,
  • Flint Rover,
  • Albany,
  • Georgia,
  • Ocala limestone,
  • Paleoenvironment
Disciplines
Publication Date
2013
Citation Information
Kathlyn M. Smith, Alexander K. Hastings, and Ryan M. Bebej. "Evolution, Dispersal, and Habitat Preference of Basilosaurus (Mammalia: Cetacea) in the southeastern United States: New Evidence from the Eocene of Southwest Georgia" Oral Presentation at the 62nd Annual Meeting of the Southeastern Section of the Geological Society of America. San Juan, Puerto Rico. Jan. 2013
source:https://gsa.confex.com/gsa/2013SE/webprogram/Paper215298.html