and Decker P.D. 2010. A new skeletal remain of the durophagous shark, Ptychodus mortoni, from the Upper Cretaceous of North America : an indication of gigantic body size. Cretaceous Research 31(2):249-254.The specimen has been donated to the Sternberg Museum of Natural History (FHSM VP...
Teeth arranged in each single row do not decrease in size, which is in contrast to Woodward's sketch, where anterior teeth were smaller than posterior teeth (see Fig. 8A). In the reconstruction presented here, the anterior shrinkage of the crushing plate is more gradual due to a higher...
A correlation between inoceramid shell sizes, thicknesses and their increasing size during the Cenomanian and Turonian might explain the more robust and coarser ridged enamel surfaces in Ptychodus teeth, if Ptychodus is believed to have preyed on epifaunistic inoceramid bivalves....
A new skeletal remain of the durophagous shark, Ptychodus mortoni , from the Upper Cretaceous of North America: an indication of gigantic body size. Cretaceous Research 31: 249 – 254 .Shimada, K., Everhart, M.J., Decker, R. and Decker, P.D. 2010 . A new skeletal remain of the ...