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Paleobiogeography, high-resolution stratigraphy, and the future of Paleozoic biostratigraphy: Fine-scale diachroneity of the Wenlock (Silurian) conodont Kockelella walliseri

Cramer, Bradley D.; Kleffner, Mark A.; Brett, Carlton E.; McLaughlin, Patrick I.; Jeppsson, Lennart LU ; Munnecke, Axel and Samtleben, Christian (2010) International Congress on Palaeozonic Climates In Palaeogeography, Palaeoclimatology, Palaeoecology 294(3-4). p.232-241
Abstract
The Wenlock Epoch of the Silurian Period has become one of the chronostratigraphically best-constrained intervals of the Paleozoic. The integration of multiple chronostratigraphic tools, such as conodont and graptolite biostratigraphy, sequence stratigraphy, and delta C-13(carb) chemostratigraphy, has greatly improved global chronostratigraphic correlation and portions of the Wenlock can now be correlated with precision better than +/- 100 kyr. Additionally, such detailed and integrated chronostratigraphy provides an opportunity to evaluate the fidelity of individual chronostratigraphic tools. Here, we use conodont biostratigraphy, sequence stratigraphy and carbon isotope (delta C-13(carb)) chemostratigraphy to demonstrate that the... (More)
The Wenlock Epoch of the Silurian Period has become one of the chronostratigraphically best-constrained intervals of the Paleozoic. The integration of multiple chronostratigraphic tools, such as conodont and graptolite biostratigraphy, sequence stratigraphy, and delta C-13(carb) chemostratigraphy, has greatly improved global chronostratigraphic correlation and portions of the Wenlock can now be correlated with precision better than +/- 100 kyr. Additionally, such detailed and integrated chronostratigraphy provides an opportunity to evaluate the fidelity of individual chronostratigraphic tools. Here, we use conodont biostratigraphy, sequence stratigraphy and carbon isotope (delta C-13(carb)) chemostratigraphy to demonstrate that the conodont Kockelella walliseri, an important guide fossil for middle and upper Sheinwoodian strata (lower stage of the Wenlock Series), first appears at least one full stratigraphic sequence lower in Laurentia than in Baltica. Rather than serving as a demonstration of the unreliability of conodont biostratigraphy, this example serves to demonstrate the promise of high-resolution Paleozoic stratigraphy. The temporal difference between the two first occurrences was likely less than 1 million years, and although it is conceptually understood that speciation and colonization must have been non-instantaneous events, Paleozoic paleobiogeographic variability on such short timescales (tens to hundreds of kyr) traditionally has been ignored or considered to be of little practical importance. The expansion of high-resolution Paleozoic stratigraphy in the future will require robust biostratigraphic zonations that embrace the integration of multiple chronostratigraphic tools as well as the paleobiogeographic variability in ranges that they will inevitably demonstrate. In addition, a better understanding of the paleobiogeographic migration histories of marine organisms will provide a unique tool for future Paleozoic paleoceanography and paleobiology research. (C) 2010 Elsevier B.V. All rights reserved. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Chronostratigraphy, stratigraphy, Sequence, Carbon isotope, Conodont zonation, Wenlock, Silurian, Ireviken Event, Paleobiogeography
in
Palaeogeography, Palaeoclimatology, Palaeoecology
volume
294
issue
3-4
pages
232 - 241
publisher
Elsevier
conference name
International Congress on Palaeozonic Climates
external identifiers
  • wos:000281221400011
  • scopus:77955278258
ISSN
0031-0182
1872-616X
DOI
10.1016/j.palaeo.2010.01.002
language
English
LU publication?
yes
id
ceca5761-9e8f-4014-b0c0-505cf1641e5a (old id 1672621)
date added to LUP
2010-09-23 13:14:00
date last changed
2018-05-29 10:20:45
@inproceedings{ceca5761-9e8f-4014-b0c0-505cf1641e5a,
  abstract     = {The Wenlock Epoch of the Silurian Period has become one of the chronostratigraphically best-constrained intervals of the Paleozoic. The integration of multiple chronostratigraphic tools, such as conodont and graptolite biostratigraphy, sequence stratigraphy, and delta C-13(carb) chemostratigraphy, has greatly improved global chronostratigraphic correlation and portions of the Wenlock can now be correlated with precision better than +/- 100 kyr. Additionally, such detailed and integrated chronostratigraphy provides an opportunity to evaluate the fidelity of individual chronostratigraphic tools. Here, we use conodont biostratigraphy, sequence stratigraphy and carbon isotope (delta C-13(carb)) chemostratigraphy to demonstrate that the conodont Kockelella walliseri, an important guide fossil for middle and upper Sheinwoodian strata (lower stage of the Wenlock Series), first appears at least one full stratigraphic sequence lower in Laurentia than in Baltica. Rather than serving as a demonstration of the unreliability of conodont biostratigraphy, this example serves to demonstrate the promise of high-resolution Paleozoic stratigraphy. The temporal difference between the two first occurrences was likely less than 1 million years, and although it is conceptually understood that speciation and colonization must have been non-instantaneous events, Paleozoic paleobiogeographic variability on such short timescales (tens to hundreds of kyr) traditionally has been ignored or considered to be of little practical importance. The expansion of high-resolution Paleozoic stratigraphy in the future will require robust biostratigraphic zonations that embrace the integration of multiple chronostratigraphic tools as well as the paleobiogeographic variability in ranges that they will inevitably demonstrate. In addition, a better understanding of the paleobiogeographic migration histories of marine organisms will provide a unique tool for future Paleozoic paleoceanography and paleobiology research. (C) 2010 Elsevier B.V. All rights reserved.},
  author       = {Cramer, Bradley D. and Kleffner, Mark A. and Brett, Carlton E. and McLaughlin, Patrick I. and Jeppsson, Lennart and Munnecke, Axel and Samtleben, Christian},
  booktitle    = {Palaeogeography, Palaeoclimatology, Palaeoecology},
  issn         = {0031-0182},
  keyword      = {Chronostratigraphy,stratigraphy,Sequence,Carbon isotope,Conodont zonation,Wenlock,Silurian,Ireviken Event,Paleobiogeography},
  language     = {eng},
  number       = {3-4},
  pages        = {232--241},
  publisher    = {Elsevier},
  title        = {Paleobiogeography, high-resolution stratigraphy, and the future of Paleozoic biostratigraphy: Fine-scale diachroneity of the Wenlock (Silurian) conodont Kockelella walliseri},
  url          = {http://dx.doi.org/10.1016/j.palaeo.2010.01.002},
  volume       = {294},
  year         = {2010},
}