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Graptolite and conodont biostratigraphy of the upper Telychian–lower Sheinwoodian (Llandovery–Wenlock) strata, Jabalón River section, Corral de Calatrava, central Spain

Published online by Cambridge University Press:  28 November 2008

D. K. LOYDELL ,
G. N. SARMIENTO ,
P. ŠTORCH  and
J. C. GUTIÉRREZ-MARCO
D. K. LOYDELL*
Affiliation:
School of Earth and Environmental Sciences, University of Portsmouth, Burnaby Road, Portsmouth, PO1 3QL, UK
G. N. SARMIENTO
Affiliation:
Departamento de Paleontología e Instituto de Geología Económica CSIC-UCM, José Antonio Novais 2, 28040 Madrid, Spain
P. ŠTORCH
Affiliation:
Institute of Geology, Academy of Sciences of the Czech Republic, Rozvojová 135, Praha 6, 16500, Czech Republic
J. C. GUTIÉRREZ-MARCO
Affiliation:
Departamento de Paleontología e Instituto de Geología Económica CSIC-UCM, José Antonio Novais 2, 28040 Madrid, Spain
*
*Author for correspondence: david.loydell@port.ac.uk
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Abstract

A graptolite biostratigraphy is erected for the upper Telychian (upper crenulata Biozone) to lower Sheinwoodian (riccartonensis or dubius Biozone) strata of the Jabalón River section, Spain. Two unconformities are recognized in the section: one between the lapworthi and murchisoni biozones; the other between the murchisoni and riccartonensis biozones. These unconformities coincide with intervals of lowered eustatic sea-level. Graptolite assemblages include both cosmopolitan taxa and some which have been recorded previously from Morocco and/or other Spanish sections. At some stratigraphical levels Pristiograptus or Euroclimacis species are abundant; Monoclimacis, Streptograptus and Mediograptus species are generally uncommon. Conodonts were examined from the upper spiralis through to lower murchisoni Biozone; the occurrences of Pterospathodus amorphognathoides are consistent with the species' known range elsewhere. Four new graptolite species are described: Euroclimacis jabalonensis, E. hamata, Monoclimacis flexa and Stimulograptus pradoi.

Keywords

graptolitesConodontaSilurianbiostratigraphyCentral Iberian ZoneSpain
Type
Original Article
Information
Geological Magazine , Volume 146 , Issue 2 , March 2009 , pp. 187 - 198
Copyright
Copyright © Cambridge University Press 2008

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