Scanning electron microscope examination of the dental enameloid of the Cretaceous durophagous shark Ptychodus supports neoselachian classification
BL Hoffman, SA Hageman… - Journal of …, 2016 - pubs.geoscienceworld.org
Although Ptychodus teeth are well known in Late Cretaceous marine deposits in North
America and Europe and a few specimens with jaw elements have been discovered, the …
America and Europe and a few specimens with jaw elements have been discovered, the …
Partial skull of Late Cretaceous durophagous shark, Ptychodus occidentalis (Elasmobranchii: Ptychodontidae), from Nebraska, USA
K Shimada, CK Rigsby, SH Kim - Journal of Vertebrate …, 2009 - Taylor & Francis
ABSTRACT Ptychodus (Elasmobranchii: Ptychodontidae) is an enigmatic durophagous
shark known from Cretaceous marine deposits nearly worldwide based primarily on isolated …
shark known from Cretaceous marine deposits nearly worldwide based primarily on isolated …
Dentition of Late Cretaceous shark, Ptychodus mortoni (Elasmobranchii, Ptychodontidae)
K Shimada - Journal of Vertebrate Paleontology, 2012 - Taylor & Francis
ABSTRACT Ptychodus (Elasmobranchii, Ptychodontidae) is an enigmatic durophagous
shark that lived in Cretaceous seas. Based on multiple articulated tooth plates of Ptychodus …
shark that lived in Cretaceous seas. Based on multiple articulated tooth plates of Ptychodus …
A revision of the Upper Cretaceous shark Ptychodus mediterraneus Canavari, 1916 from northeastern Italy, with a reassessment of P. latissimus and P. polygyrus …
M Amadori, J Amalfitano, L Giusberti, E Fornaciari… - Cretaceous …, 2020 - Elsevier
Dental and skeletal remains of Ptychodus mediterraneus from the Upper Cretaceous
Scaglia Rossa Formation of northeastern Italy are described and discussed herein, together …
Scaglia Rossa Formation of northeastern Italy are described and discussed herein, together …
[图书][B] Stratigraphic, geographic and paleoecological distribution of the Late Cretaceous shark genus Ptychodus within the Western Interior Seaway, North America
SA Hamm - 2020 - books.google.com
Presented here is a comprehensive monograph of all the members of the Late Cretaceous
shark family Ptychodontidae. It is composed of two genera, Paraptychodus and Ptychodus …
shark family Ptychodontidae. It is composed of two genera, Paraptychodus and Ptychodus …
Enameloid microstructure in the oldest known chondrichthyan teeth
H Botella, PCJ Donoghue, C Martínez‐Pérez - Acta Zoologica, 2009 - Wiley Online Library
Previous studies on tooth enameloid microstructure in several chondrichthyan taxa
spanning the phylogeny of the group provided support for the homology of chondrichthyan …
spanning the phylogeny of the group provided support for the homology of chondrichthyan …
[HTML][HTML] The first tooth set of Ptychodus atcoensis (Elasmobranchii: Ptychodontidae), from the Cretaceous of Venezuela
JD Carrillo-Briceño, SG Lucas - Swiss Journal of Palaeontology, 2013 - Springer
Ptychodus atcoensis is a characteristic Late Cretaceous durophagous shark, with a fossil
record that was previously known exclusively from the Coniacian Atco Formation in Texas …
record that was previously known exclusively from the Coniacian Atco Formation in Texas …
[图书][B] Systematic, stratigraphic, geographic and paleoecological distribution of the Late Cretaceous shark genus Ptychodus within the Western Interior Seaway
SA Hamm - 2008 - search.proquest.com
This is the first comprehensive review of the Cretaceous elasmobranch family
Ptychodontidae and the first 3 dimensional morphometric analyses regarding the variability …
Ptychodontidae and the first 3 dimensional morphometric analyses regarding the variability …
First associated tooth set of Ptychodus mammillaris in north America, pfeifer shale Member (lower middle turonian), greenhorn limestone
SA Hamm - Transactions of the Kansas Academy of Science, 2017 - BioOne
Tooth remains of the elasmobranch Ptychodus are common in Late Cretaceous marine in
both nearshore and deep water deposits worldwide. Although they are typically found as …
both nearshore and deep water deposits worldwide. Although they are typically found as …
[PDF][PDF] A late Cretaceous durophagous shark, Ptychodus martini Williston, from Texas
S Hamm, K Shimada - Texas Journal of Science, 2004 - researchgate.net
The Late Cretaceous durophagus shark previously described as Ptychodus connelyf (Family
Ptychodontidae) by MacLeod & Slaughter is here diagnosed as a junior synonym of …
Ptychodontidae) by MacLeod & Slaughter is here diagnosed as a junior synonym of …