Studies on Lower Devonian petrifactions from Britain. 2. Sennicaulis, a new form genus for sterile axes based on pyrite and limonite petrifactions from the Senni Beds

Edwards, Dianne ORCID: https://orcid.org/0000-0002-9786-4395 1981. Studies on Lower Devonian petrifactions from Britain. 2. Sennicaulis, a new form genus for sterile axes based on pyrite and limonite petrifactions from the Senni Beds. Review of Palaeobotany and Palynology 32 (2-3) , pp. 207-226. 10.1016/0034-6667(81)90004-X

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Abstract

Pyrite and limonite petrifactions of a new type of axis are described from the Senni Beds, Lower Old Red Sandstone from Wales. The principal diagnostic character is a conspicuous, terete, centrarch xylem strand composed of tracheids with distinctive helical and annular secondary thickenings. Immediately outside the xylem is a zone of crushed cells. As nothing is known about the morphology and fertile parts of the plant a new form genus, Sennicaulis, has been erected. Its affinities are either with the Rhyniophytina or Trimerophytina. The Welsh specimens have been named Sennicaulis hippocrepiformis gen. et sp. nov.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Earth and Environmental Sciences
Subjects:	Q Science > QE Geology Q Science > QK Botany
Publisher:	Elsevier
ISSN:	0034-6667
Last Modified:	18 Oct 2022 12:32
URI:	https://orca.cardiff.ac.uk/id/eprint/10190

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