2002. Associated tooth set of the Late Cretaceous lamniform shark, Scapanorhynchus raphiodon (Mitsukurinidae), from the Niobrara Chalk of western Kansas. Kansas Academy of Science, Transactions 105(1-2):18-26. Hattin, D. E. 1982. Stratigraphy and depositional environment of the Smoky Hill...
Upper CretaceousDental remains of the elasmobranch Ptychodus from the Upper Cretaceous of northeastern Italy are described herein. This material, consisting of two slabs containing a partially associated tooth set and additional detached teeth with similar morphological features, derives from different ...
This material, consisting of two slabs containing a partially associated tooth set and additional detached teeth with similar morphological features, derives from different lithozones of the Scaglia Rossa Formation, known as the lastame and Pietra di Castellavazzo. All of these teeth are characterized...
The first tooth set of Ptychodus atcoensis (Elasmobranchii: Ptychodontidae), from the Cretaceous of Venezuela. Swiss J. Palaeontol. 2013 ;132:69–75. 10.1007/s13358-013-0053-3Carrillo-Bricen~o, J.D., Lucas, S.G., 2013. The first tooth set of Ptychodus atcoensis (Elasmobranchii...
The first tooth set of Ptychodus atcoensis (Elasmobranchii: Ptychodontidae), from the Cretaceous of Venezuela. Swiss J. Palaeontol. 2013;132:69-75.Carrillo-Bricen~o, J.D., Lucas, S.G., 2013. The first tooth set of Ptychodus atcoensis (Elasmobranchii: Ptychodontidae), from the ...
It is hypothesized here that the imbrications of tooth rows in P. mortoni likely helped distribute the bite-induced load on its dentition more widely, and its sharp-tipped crowns were effective in shattering animals with comparably thin, brittle shells (e.g., bivalves and crustaceans). The ...
The availability of different prey items is proposed here as one of the possible drivers, in addition to abiotic environmental factors, for the diversification of shark tooth morphologies, and possible trophic partitioning between cuspidate and un-cuspidate species of the genus Ptychodus .Manuel ...
If the tooth was not subjected to any significant reworking, the specimen not only represents the youngest occurrence for the species, but also one of the youngest occurrences of the genus and family.doi:10.1007/s10144-004-0189-5Shawn A. Hamm...
TEETHMESOZOIC EraJEANS (Clothing)A new lower tooth plate of Ptychodus decurrens from the Turonian (Upper Cretaceous) of the Dalmatian region (southern Croatia) is documented here for the first time. The specimen represents the first articulated dentition of a ptychodontid shark that has been ...
This is the first comprehensive review of the Cretaceous elasmobranch family Ptychodontidae and the first 3 dimensional morphometric analyses regarding the variability in each species and tooth position of individual teeth within the dentition. The Ptychodontidae consists of four genera, and and are...