In October, 2010, I was contacted by Steve Mense, an amateur collector who had discovered a large number of Ptychodus mortoni teeth near the Smoky Hill River in eastern Logan County, Kansas. He had already collected over 300 teeth but needed help in recovering the rest of the specimen, ...
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 ...
Even though a defined cusp is missing, the occlusal surface of the teeth is undeniably raised and bulgy in some un-cuspidate species of Ptychodus (e.g., P. decurrens). This compels us to reconsider the use of terms such as high- and low-crowned as...
Citation: Ptychodus davisi (Hasse, 1884): In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 11/2024 No image available. Please send your images of "Ptychodus davisi" to info@shark-references.comRemarks shark-references Species-...
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...
One individual shark possesses a total of slightly over 550 teeth, with approximately 220 functional upper teeth and 260 functional lower teeth. The largest tooth plate of the species likely measured about 55聽cm in length and 45聽cm in width. Although this study does not resolve the ordinal ...
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....
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 ...
Ptychodus (Elasmobranchii: Ptychodontidae) is an enigmatic durophagous shark known from Cretaceous marine deposits nearly worldwide based primarily on isolated teeth. Here, we describe a specimen of P. occidentalis Leidy from the Greenhorn Limestone (middle Cenomanian鈥揺arly Turonian) in Nebraska...
atcoensis that will allow isolated teeth of the species to be more readily identified and located in the dentition.J. D. Carrillo-BriceoS. G. LucasSwiss journal of palaeontologyCarrillo-Briceno JD, Spencer LG. The first tooth set of Ptychodus atcoensis (Elasmobranchii: Ptychodontidae), ...