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Late cretaceous sharks Cretoxyrhina and Cardabiodon from Montana, USA

Siverson, Mikael LU and Lindgren, Johan LU (2005) In Acta Palaeontologica Polonica 50(2). p.301-314
Abstract
The middle part of the Cretaceous represents a time of high diversity and rapid rates of dental evolution in lamniform sharks. Several species had a very wide spatial distribution with recorded occurrences in both hemispheres. We have examined isolated teeth of Cretoxyrhina and Cardabiodon from eastern Russia, Mangyshlak in Kazakhstan, and the Western Interior of the USA. The material indicates that samples of isolated teeth of the two genera have high potential in intercontinental correlation of the upper Albian to mid-Turonian interval in mid-palaeolatitude deposits, poor in other age-diagnostic fossil groups. The utilization of these lamniforms in mid-Cretaceous biostratigraphy is currently hampered by the nearly total absence in the... (More)
The middle part of the Cretaceous represents a time of high diversity and rapid rates of dental evolution in lamniform sharks. Several species had a very wide spatial distribution with recorded occurrences in both hemispheres. We have examined isolated teeth of Cretoxyrhina and Cardabiodon from eastern Russia, Mangyshlak in Kazakhstan, and the Western Interior of the USA. The material indicates that samples of isolated teeth of the two genera have high potential in intercontinental correlation of the upper Albian to mid-Turonian interval in mid-palaeolatitude deposits, poor in other age-diagnostic fossil groups. The utilization of these lamniforms in mid-Cretaceous biostratigraphy is currently hampered by the nearly total absence in the literature of well illustrated, well dated and sufficiently large samples of isolated teeth of the two genera. As a first Step towards the establishment of an intercontinental elasmobranch zonation for mid-Cretaceous strata in temperate palaeo-regions, we describe and illustrate samples of teeth of Cardabiodon venator SP. nov. and Cretoxyrhina mantelli from the lower middle Turonian Collignoniceras woollgari regulare Zone in the Fairport Member of the Carlile Shale in east-central Montana, USA. These samples could serve as reference points for future biostratigraphic studies of Cretoxyrhina and Cardabiodon. The extinction of Cretoxryhina may be diachronous, as regional last appearance data range from the upper Santonian (Marsupites testudinarius Zone) in Western Australia to the uppermost lower Campanian (informal Belemnellocamax maminillatus zone; a lateral equivalent to the German Gonioteuthis quadrata gracilislBelemnitella inucronata Zone) in southern Sweden. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
biostratigraphy, sharks, Lamniformes, Cardabiodon, Cretoxyrhina, Cretaceous
in
Acta Palaeontologica Polonica
volume
50
issue
2
pages
301 - 314
publisher
Instytut Paleobiologii PAN
external identifiers
  • wos:000230216100010
  • scopus:21444460647
ISSN
0567-7920
language
English
LU publication?
yes
id
1937a38c-2de0-4c64-82d0-4969169293c3 (old id 233676)
alternative location
http://www.app.pan.pl/acta50/app50-301.pdf
date added to LUP
2007-08-16 16:23:32
date last changed
2017-10-22 04:35:17
@article{1937a38c-2de0-4c64-82d0-4969169293c3,
  abstract     = {The middle part of the Cretaceous represents a time of high diversity and rapid rates of dental evolution in lamniform sharks. Several species had a very wide spatial distribution with recorded occurrences in both hemispheres. We have examined isolated teeth of Cretoxyrhina and Cardabiodon from eastern Russia, Mangyshlak in Kazakhstan, and the Western Interior of the USA. The material indicates that samples of isolated teeth of the two genera have high potential in intercontinental correlation of the upper Albian to mid-Turonian interval in mid-palaeolatitude deposits, poor in other age-diagnostic fossil groups. The utilization of these lamniforms in mid-Cretaceous biostratigraphy is currently hampered by the nearly total absence in the literature of well illustrated, well dated and sufficiently large samples of isolated teeth of the two genera. As a first Step towards the establishment of an intercontinental elasmobranch zonation for mid-Cretaceous strata in temperate palaeo-regions, we describe and illustrate samples of teeth of Cardabiodon venator SP. nov. and Cretoxyrhina mantelli from the lower middle Turonian Collignoniceras woollgari regulare Zone in the Fairport Member of the Carlile Shale in east-central Montana, USA. These samples could serve as reference points for future biostratigraphic studies of Cretoxyrhina and Cardabiodon. The extinction of Cretoxryhina may be diachronous, as regional last appearance data range from the upper Santonian (Marsupites testudinarius Zone) in Western Australia to the uppermost lower Campanian (informal Belemnellocamax maminillatus zone; a lateral equivalent to the German Gonioteuthis quadrata gracilislBelemnitella inucronata Zone) in southern Sweden.},
  author       = {Siverson, Mikael and Lindgren, Johan},
  issn         = {0567-7920},
  keyword      = {biostratigraphy,sharks,Lamniformes,Cardabiodon,Cretoxyrhina,Cretaceous},
  language     = {eng},
  number       = {2},
  pages        = {301--314},
  publisher    = {Instytut Paleobiologii PAN},
  series       = {Acta Palaeontologica Polonica},
  title        = {Late cretaceous sharks Cretoxyrhina and Cardabiodon from Montana, USA},
  volume       = {50},
  year         = {2005},
}