Skip to content Skip to navigation

Article: Taxonomy and phylogeny of Staurograptus Emmons from the base of the Ordovician

Publication: Palaeontology
Volume: 48
Part: 5
Publication Date: September 2005
Page(s): 1007 1019
Author(s): Hongzhen Feng, Bernd-D. Erdtmann and Yuandong Zhang
Addition Information

How to Cite

FENG, H., ERDTMANN, B., ZHANG, Y. 2005. Taxonomy and phylogeny of Staurograptus Emmons from the base of the Ordovician. Palaeontology48, 5, 1007–1019.

Online Version Hosted By

Wiley Online Library
Get Article: Wiley Online Library [Pay-to-View Access] |

Abstract

Taxonomic and biostratigraphic investigation of Staurograptus at small sampling intervals from the basal Ordovician sections at Green Point, western Newfoundland, Riviere Petite Blanche on the Gaspe Peninsula, Quebec, and Wuning in north-west Jiangxi, South China, reveal a complete morphological series comprising three distinct staurograptid forms identified as three species: Staurograptus dichotomus Emmons, S. apertus Ruedemann and S. hyperboreus (Obut and Sobolevskaya). This new discovery suggests a complete phylogenetic lineage for Staurograptus, which is supposedly derived from an unknown dictyonemid form, and is expressed as phased distalward migration of the second-order branches. Descriptions of these three species, reviews of their nomenclatorial histories, evaluations of their distinctive morphological criteria and discussions of their synonymous species or subspecies are presented.
PalAss Go! URL: http://go.palass.org/542 | Twitter: Share on Twitter | Facebook: Share on Facebook | Google+: Share on Google+