Asteroxylon ("star-shaped xylem") is an extinct genus of vascular plants of the Division Lycopodiophyta known from anatomically preserved specimens described from the famous Early Devonian Rhynie chert and Windyfield chert in Aberdeenshire, Scotland.[1][2]Asteroxylon is considered a basal member of the Lycopsida.[3]
^Kidston, R.; Lang, W. H. (1920). "On Old Red Sandstone Plants showing Structure, from the Rhynie Chert Bed, Aberdeenshire. Part III. Asteroxylon Mackiei, Kidston and Lang". Transactions of the Royal Society of Edinburgh. 52 (3): 643–680. doi:10.1017/S0080456800004506. S2CID 131282834.
^Rice, C. M.; Ashcroft, W. A.; Batten, D. J.; Boyce, A. J.; Caulfield, J. B. D.; Fallick, A. E.; Hole, M. J.; Jones, E.; Pearson, M. J.; Rogers, G.; Saxton, J. M.; Stuart, F. M.; Trewin, N. H.; Turner, G.; et al. (1995). "A Devonian auriferous hot spring system, Rhynie, Scotland". Journal of the Geological Society, London. 152 (2): 229–250. Bibcode:1995JGSoc.152..229R. doi:10.1144/gsjgs.152.2.0229. S2CID 128977213.
^Hao, Shougang; Xue, Jinzhuang (2013). The Early Devonian Posongchong Flora of Yunnan - A Contribution to an Understanding of the Evolution and Early Diversification of Vascular Plants. Beijing: Science Press. pp. 244–245. ISBN 978-7-03-036616-0.
Asteroxylon ("star-shaped xylem") is an extinct genus of vascular plants of the Division Lycopodiophyta known from anatomically preserved specimens described...
more complex megaphylls of other vascular plants. The extinct genus Asteroxylon represents a transition between these two groups: it has a vascular trace...
are: Order †Drepanophycales (including Baragwanathia, Drepanophycus and Asteroxylon) Order †Protolepidodendrales Order †Lepidodendrales Order †Pleuromeiales...
Drepanophycales. However, Kenrick and Crane (1997) in their cladistic study place Asteroxylon in the clade Drepanophycaceae. Taylor, Taylor & Krings (2009) do not...
(the central vasculature) later emerged towards the enations (as in Asteroxylon), and eventually continued to grow fully into the leaf to form the mid-vein...
Baragwanathia differed from such taxa as Asteroxylon by the presence of vascular tissue in its leaves—Asteroxylon had enations without vascular tissue. The...
Aglaophyton, are also common; there are also more complex plants, like Asteroxylon, which has a very early form of leaves. Polysporangiophytes Kenrick,...
vascular plant, and grew in association with other vascular plants such as Asteroxylon mackei, a probable ancestor of modern clubmosses (Lycopsida), and with...
protostele connecting with existing enations The leaves of the Rhynie genus Asteroxylon, which was preserved in the Rhynie chert almost 20 million years later...
fragments were considered to be parts of Asteroxylon mackiei. In 1964 Lyon described sporangia belonging to Asteroxylon mackiei and suggested that Kidston and...
interpreted as a representative of the ancestors of modern vascular plants and Asteroxylon mackei, which was an ancestor of modern clubmosses (Lycopsida). The stems...
Horneophyton), and which were likely to have colonised waterlogged surfaces (Asteroxylon). In some cases, it is possible to see different mechanisms of repairing...
euphyllophyte Asteroxylaceae – now placed in the order Drepanophycales Asteroxylon By 1975, it had become clear that the class had become increasingly unnatural...
Drepanophycaceae for more details. It is more derived than the coexisting genus Asteroxylon, which has enations lacking vascules, in contrast to the true leaves...
Turner et al. (2023) report diverse phyllotaxis in leaves of the lycopod Asteroxylon mackiei from the Devonian Rhynie chert (United Kingdom), including whorls...
Bippus, Escapa & Tomescu (2018). Meristems of rooting axes belonging to Asteroxylon mackiei are described from the Rhynie chert (United Kingdom) by Hetherington...
Reconstruction of the structure and development of the rooting system of Asteroxylon mackiei is presented by Hetherington et al. (2021). A study on factors...
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