Dentition of Late Cretaceous shark,Ptychodus mortoni(Elasmobranchii, Ptychodontidae)

Performance of shark teeth during puncture and draw: implications for the mechanics of cutting

(2010) LISA B. WHITENACK et al.   BIOLOGICAL JOURNAL OF THE LINNEAN SOCIETY

The Late Cretaceous Shark Ptychodus marginalis in the Western Interior Seaway, USA

(2010) Shawn A. Hamm   JOURNAL OF PALEONTOLOGY

Mid-Cenomanian vertebrate faunas of the Western Interior Seaway of North America and their evolutionary, paleobiogeographical, and paleoecological implications

(2010) Stephen L. Cumbaa et al.   PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY

A new skeletal remain of the durophagous shark, Ptychodus mortoni, from the Upper Cretaceous of North America: an indication of gigantic body size

(2009) Kenshu Shimada et al.   CRETACEOUS RESEARCH

Partial skull of Late Cretaceous durophagous shark,Ptychodus occidentalis(Elasmobranchii: Ptychodontidae), from Nebraska, U.S.A.

(2009) Kenshu Shimada et al.   JOURNAL OF VERTEBRATE PALEONTOLOGY

Functional morphology of the feeding apparatus, feeding constraints, and suction performance in the nurse sharkGinglymostoma cirratum

(2008) Philip J. Motta et al.   JOURNAL OF MORPHOLOGY