These are parrotfish jaws. They act like a beak.  The fish bite off pieces of the coral and crush it for its protein content. Late Miocene  Bone Valley Formation Near Bartow, Florida
This is a drum fish. They have pavement teeth.  The crusher  plate is from a recent specimen. The upper 2 teeth are enlargments of the two loose teeth below the jaw. The tan tooth is actually from the jaw while the black tooth is a fossil. Late Miocene  Bone Valley Formation Near Bartow, Florida
	These are fish vertebrae Late Miocene  Bone Valley Formation Near Bartow, Florida

Information provided by: http://inst.santafe.cc.fl.us