Affinities and architecture of Devonian trunks of Prototaxites loganii

  title={Affinities and architecture of Devonian trunks of Prototaxites loganii},
  author={Gregory J. Retallack and Ed Landing},
  pages={1143 - 1158}
Devonian fossil logs of Prototaxites loganii have been considered kelp-like aquatic algae, rolled up carpets of liverworts, enormous saprophytic fungal fruiting bodies or giant lichens. Algae and rolled liverwort models cannot explain the proportions and branching described here of a complete fossil of Prototaxites loganii from the Middle Devonian (386 Ma) Bellvale Sandstone on Schunnemunk Mountain, eastern New York. The “Schunnemunk tree” was 8.83 m long and had six branches, each about 1 m… Expand
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Protonympha is an enigmatic fossil represented by two species from the Middle Devonian (Protonympha transversa) and Late Devonian (Protonympha salicifolia) of New York. Although interpreted in theExpand
Protonympha is an enigmatic fossil represented by two species from the Middle Devonian (Protonympha transversa) and Late Devonian (Protonympha salicifolia) of New York. Although interpreted in theExpand
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The Ordovician and Silurian periods were times of major geological activity as regards palaeogeography, volcanism and climate change, the last of these evidenced by a series of cooling episodes andExpand


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Clarification of the genus Nematothallus Lang
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Were the Ediacaran fossils lichens
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Structural, physiological, and stable carbon isotopic evidence that the enigmatic Paleozoic fossil Prototaxites formed from rolled liverwort mats.
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Aglaophyton major, a non-vascular land-plant from the Devonian Rhynie Chert
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