Skip to content Skip to navigation

Article: Uppermost Ordovician to Lower Silurian graptolite biostratigraphy of the Wye valley, central Wales

Publication: Palaeontology
Volume: 37
Part: 3
Publication Date: November 1994
Page(s): 695 720
Author(s): Jan Zalasiewicz and Steve Tunnicliff
DOI:
Addition Information

How to Cite

ZALASIEWICZ, J., TUNNICLIFF, S. 1994. Uppermost Ordovician to Lower Silurian graptolite biostratigraphy of the Wye valley, central Wales. Palaeontology37, 3, 695–720.

Online Version Hosted By

The Palaeontological Association (Free Access)

Abstract

The graptolite biostratigraphy of the persculptus to magnus Biozone interval (upper Hirnantian to lower Aeronian) in the Wye valley near Rhayader, central Wales, is described. Possible refinements to the graptolite zonal scheme are indicated, including informal subdivisions of the acuminatus and acinaces Biozones. Quantitative faunal assessment indicates that diplograptid: monograptid ratios are useful in indicating stratigraphical level. Selected taxa are described, including three new species, Normalograptus? wyensis, Pseudoglyptograptus barriei and ' Orthograptus' cabanensis.
PalAss Go! URL: http://go.palass.org/4mf | Twitter: Share on Twitter | Facebook: Share on Facebook | Google+: Share on Google+