headerpos: 9353
 
 
  Estonian Journal of Earth Sciences

ISSN 1736-7557 (electronic)  ISSN 1736-4728 (print)
An international scientific journal

Formerly: Proceedings of the Estonian Academy of Sciences, Geology
Published since 1952

Estonian Journal of Earth Sciences

ISSN 1736-7557 (electronic)  ISSN 1736-4728 (print)
An international scientific journal

Formerly: Proceedings of the Estonian Academy of Sciences, Geology
Published since 1952

Publisher
Journal Information
» Editorial Board
» Editorial Policy
» Article Publication Charges
» Archival Policy
» Copyright and Licensing Policy
Guidelines for Authors
» Instructions to Authors
Guidelines for Reviewers
» Review Form
Open Access
List of Issues
» 2019
» 2018
» 2017
» 2016
» 2015
» 2014
Vol. 63, Issue 4
Vol. 63, Issue 3
Vol. 63, Issue 2
Vol. 63, Issue 1
» 2013
» 2012
» 2011
» 2010
» 2009
» 2008
» 2007
» Back issues (full texts)
  in Google
» Back issues (full texts)
  in Google Ecology
» Back issues in ETERA
Keemia. Geoloogia
» ETERA_scan
Subscription Information
Internet Links
Support & Contact
Publisher
» Other Journals
» Staff

The Llandovery (Silurian) conodont species diversity on the Upper Yangtze Platform, South China; pp. 201–206

(Full article in PDF format) doi: 10.3176/earth.2014.19


Authors

Zhongyang Chen, Junxuan Fan, Xudong Hou, Linli Lu

Abstract

Conodonts are one of the stratigraphically most important fossil groups in the Silurian Period. We examine the regional diversity dynamics of the Llandovery condonts on the Upper Yangtze Platform. The data set of 41 species from seven sections is compiled from the Geobiodiversity Database. Four measures of taxonomic richness based on zonal counting are used to demonstrate the conodont diversity change. The CONOP (Constrained optimization) program is used to build up a more precise composite sequence, which provides the data for comparative analysis of diversity change. Conodont richness keeps growing from the Ozarkodina aff. hassi Zone through the Ozarkodina obesa Zone to the Ozarkodina guizhouensis Zone and reaches a peak at the fourth zone, the Pterospathodus eopennatus Zone. This significant growth was followed by a rapid decrease, which probably represents an extinction in the mid-Telychian. This extinction event can also be observed in other fossil groups such as graptolites and chitinozoans based on recent studies.

Keywords

conodont, Llandovery (Silurian), Upper Yangtze Platform, South China, diversity, CONOP.

References

Aldridge , R. J. & Schönlaub , H. P. 1989. Conodonts. In A Global Standard for the Silurian System (Holland , C. H. & Bassett , M. G. , eds) , pp. 274–279. National Museum of Wales , Cardiff.

Briggs , D. E. G. , Clarkson , E. N. K. & Aldridge , R. J. 1983. The conodont animal. Lethaia , 16 , 1–14.
http://dx.doi.org/10.1111/j.1502-3931.1983.tb01139.x

Chen , X. , Rong , J. Y. , Mitchell , C. E. , Harper , D. A. T. , Fan , J. X. , Zhan , R. B. , Zhang , Y. D. , Li , R. Y. & Wang , Y. 2000. Late Ordovician to earliest Silurian graptolite and brachiopod biozonation from the Yangtze region , South China , with a global correlation. Geological Magazine , 137 , 623–650.
http://dx.doi.org/10.1017/S0016756800004702

Cooper , R. A. 2004. Measures of diversity. In The Great Ordovician Biodiversification Event (Webby , B. D. , Paris , F. , Droser , M. L. & Percival , I. G. , eds) , pp. 52–57. Columbia University Press , New York.

Cooper , R. A. , Sadler , P. M. , Munnecke , A. & Crampton , J. S. 2014. Graptoloid evolutionary rates track Ordovician–Silurian global climate change. Geological Magazine , 151 , 349–364.
http://dx.doi.org/10.1017/S0016756813000198

Fan , J. X. , Chen , Q. , Hou , X. D. , Miller , A. I. , Melchin , M. J. , Shen , S. Z. , Wu , S. Y. , Goldman , D. , Mitchell , C. E. , Yang , Q. , Zhang , Y. D. , Zhan , R. B. , Wang , J. , Leng , Q. , Zhang , H. & Zhang , L. N. 2013a. Geobiodiversity Database: a comprehensive section-based integration of stratigraphic and paleontological data. Newsletters on Stratigraphy , 46 , 111–136.
http://dx.doi.org/10.1127/0078-0421/2013/0033

Fan , J. X. , Chen , Q. , Melchin , M. J. , Sheets , H. D. , Chen , Z. Y. , Zhang , L. N. & Hou , X. D. 2013b. Quantitative stratigraphy of the Wufeng and Lungmachi black shales and graptolite evolution during and after the Late Ordovician mass extinction. Palaeogeography , Palaeo­climatology , Palaeoecology , 389 , 96–114.
http://dx.doi.org/10.1016/j.palaeo.2013.08.005

Foote , M. 2000. Origination and extinction components of taxonomic diversity: general problems. Paleobiology , 26(sp4) , 74–102.
http://dx.doi.org/10.1666/0094-8373(2000)26[74:OAECOT]2.0.CO;2

Kemple , W. G. , Sadler , P. M. & Strauss , D. J. 1989. A prototype constrained optimization solution to the time correlation problem. In Statistical Applications in the Earth Sciences (Agterberg , F. P. & Bonham-Carter , G. F. , eds) , pp. 417–425. Geological Survey of Canada Paper , Ottawa.

Kemple , W. G. , Sadler , P. M. & Strauss , D. J. 1995. Extending graphic correlation to many dimensions: stratigraphic correlation as constrained optimization. In Graphic Correlation (Mann , K. O. & Lane , H. R. , eds) , Society of Economic Paleontologists and Mineralogists Special Publications , 53 , 65–82.

Paluveer , L. , Nestor , V. & Hints , O. 2014. Chitinozoan diversity in the East Baltic Silurian: first results of a quantitative stratigraphic approach with CONOP. GFF , 136 , 198–202.
http://dx.doi.org/10.1080/11035897.2013.873987

Sadler , P. M. , Cooper , R. A. & Melchin , M. J. 2011. Sequencing the graptoloid clade: building a global diversity curve from local range charts , regional composites and global time-lines. Proceedings of the Yorkshire Geological Society , 58 , 329–343.
http://dx.doi.org/10.1144/pygs.58.4.296

Sweet , W. C. 1988. The Conodonta: Morphology , Taxonomy , Paleoecology , and Evolutionary History of a Long-Extinct Animal Phylum. Clarendon Press , Oxford , 212 pp.

Wang , C. Y. & Aldridge , R. J. 1998. Comments on Silurian conodont genera proposed in Chinese literature. Acta Micropalaeontologica Sinica , 15 , 95–100 [in Chinese , with English abstract].

Wang , C. Y. & Aldridge , R. J. 2010. Silurian conodonts from the Yangtze Platform , South China. Special Papers in Palaeontology , 83 , 5–136.

Wang , C. Y. , Wang , P. , Yang , G. H. & Xie , W. 2009. Restudy on the Silurian conodont biostratigraphy of the Baizitian Section in Yanbian County , Sichuan. Journal of Strati­graphy , 33 , 302–317 [in Chinese , with English abstract].

Wang , C. Y. , Chen , L. D. , Wang , Y. & Tang , P. 2010. Affirmation of Pterospathodus eopennatus Zone (conodonta) and the age of the Silurian Shamao Formation in Zigui , Hubei as the correlation of the related strata. Acta Palaeontologica Sinica , 49 , 10–28 [in Chinese , with English abstract].

Wu , R. C. , Zhan , R. B. & Li , G. P. 2008. Conodont diversi­fi­cation in the Zitai Formation (Floian–Dapingian , Late early–early mid Ordovician) of Shitai , Anhui Province , East China. Acta Palaeontologica Sinica , 47 , 444–453 [in Chinese , with English abstract].

Zhou , X. Y. , Zhai , Z. Q. & Xian , S. Y. 1981. On the Silurian conodont biostratigraphy , new genera and species in Guizhou Province. Oil & Gas Geology , 2 , 123–140 [in Chinese , with English abstract].

 
Back

Current Issue: Vol. 68, Issue 3, 2019




Publishing schedule:

No. 1: 20 March
No. 2: 20 June
No. 3: 20 September
No. 4: 20 December