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
Dawsonites T.Halle 1916
Other combinations
Psilophyton arcuatum (T.Halle) H.-J.Schweitz. 1980
Types
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.
Stratigraphy
Locality
Sweden
sandstones and slates at Röragen
Plant fossil remain
macro- and meso-fossils-embryophytes except wood
Comments
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