|©Scott Anselmo, right maxilla|
The hand claws and much of the general shape of the animals are what have tied them closely together. However, Sereno et al (1998) detailed characters that were unique to Suchomimus and separated the two genera. One such character was the number of teeth. Baryonyx possessed 96 teeth in its jaws while Suchomimus houses approximately 130. Our mouths are not designed anything like these giant fish seines. Despite the image of spinosaur mouths as tooth lined nets do not forget that some of the diet of Suchomimus and others in the family tree probably came from carrion as well as fresh caught fish. What is the notch for in the jaw though?
Reference for the day:
Sereno, P.C.; Beck, A.L.; Dutheil, D.B.; Gado, B.; Larsson, H.C.E.; Lyon, G.H.; Marcot, J.D.; Rauhut, O.W.M.; Sadleir, R.W.; Sidor, C.A.; Varricchio, D.D.; Wilson, G.P; and Wilson, J.A. (1998). "A long-snouted predatory dinosaur from Africa and the evolution of spinosaurids". Science 282 (5392): 1298–1302