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  • unfused vertabrae in its neck
  • "fins and fluke" -- instead of a dorsal fin, the boutu has a ridge on its back which rises to a modifies hump at about the mid section of its body. Its flippers are large in proportion to its body annd are used steering. Its flukes are large and broad and divided by a median notch. Its unusually large flippers and flukes are probably an adaptation for maneuvering in shallow waters.

Sources:

  • dolphins-world.com/Pink_River_Dolphins
  • acsonline.org/factpack/boto.htm
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โˆ™ 2011-03-12 22:31:36
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