If Allosaurus and Acrocanthosaurus teeth were sufficient to kill their sauropods (albeit perhaps with aid of talon-based wounds), why wouldn't the even-larger Giganotosaurus teeth be sufficient?
The different sized (and more importantly, shaped!) teeth of tyrannosaurids
most likely represents a different in the style of their feeding, not in the
size of the "target audience." Ditto spinosaurid teeth.
Thomas R. Holtz, Jr. Email: tholtz@umd.edu Phone: 301-405-4084 Office: Centreville 1216 Senior Lecturer, Vertebrate Paleontology Dept. of Geology, University of Maryland http://www.geol.umd.edu/~tholtz/ Fax: 301-314-9661
Faculty Director, Earth, Life & Time Program, College Park Scholars http://www.geol.umd.edu/~jmerck/eltsite/ Fax: 301-405-0796
Mailing Address: Thomas R. Holtz, Jr.
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