Dawsonites arcuatus T.Halle

Plant Fossil Names Registry Number: PFN000228

Act LSID: urn:lsid:plantfossilnames.org:act:228

Author: T. G. Halle

Rank: species

Reference: Halle, T. G. (1916): Lower Devonian plants from Röragen in Norway. – Kungliga Svenska Vetenskapsakademiens Handlingar 57(1): 1–46 + 4 pls.

Page of description: 24

Illustrations or figures: pl. 3, figs 1–9, pl. 4, figs 18–21

Name is type for

Other combinations

Psilophyton arcuatum (T.Halle) H.-J.Schweitz. 1980


Syntype n/n
Figures: pl. 3, figs 1–9, pl. 4, figs 18–21

Note: Except the figured specimens from Röragen, several other specimens described in previous publications by different authors are assigned by Halle (1916: 24–25) to his new species. As no type is designated, all specimens, figured and unfigured, must be treated as syntypes.

Original diagnosis/description

Sporangium-bearing branch-systems, dividing dichotomously, or differentiated into a sympodially formed main axis and bifurcating lateral branches. Ultimate branches slender and curved, bearing terminal capsules of a narrowly obovoid or short fusiform shape and usually 3–5 mm. long.


Devonian, Lower Devonian


sandstones and slates at Röragen

Plant fossil remain

macro- and meso-fossils-embryophytes except wood


Use comments to notify PFNR administrators of mistakes or incomplete information relevant to this record.