The first tooth set of Ptychodus atcoensis (Elasmobranchii: Ptychodontidae), from the Cretaceous of Venezuela

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, USA, North America. We illustrate and describe for the first time a partial articulated tooth set of P . atcoensis , from...

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Bibliographic Details
Published inSwiss journal of palaeontology Vol. 132; no. 1; pp. 69 - 75
Main Authors Carrillo-Briceño, Jorge D., Lucas, Spencer G.
Format Journal Article
LanguageEnglish
Published Basel SP Birkhäuser Verlag Basel 01.04.2013
Springer Nature B.V
Subjects
Cretaceous
Dentition
Earth and Environmental Science
Earth Sciences
Fossils
Paleontology
Ptychodus
Sharks
Teeth
North America
Venezuela
Elasmobranchii
Cretaceous
Ptychodontidae
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Summary: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, USA, North America. We illustrate and describe for the first time a partial articulated tooth set of P . atcoensis , from the Cretaceous of the Venezuelan Andes, representing the only known record of this species outside of North America, thus significantly increasing the palaeobiogeographic distribution of this taxon. This partial tooth set also documents characteristic variation in the teeth of P. atcoensis that will allow isolated teeth of the species to be more readily identified and located in the dentition.
ISSN:1664-2376
1664-2384
DOI:10.1007/s13358-013-0053-3