Trimerophytopsida
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Trimerophytopsida is a class of early vascular plants from the Devonian, informally called trimerophytes. It contains genera such as Psilophyton. This group is probably paraphyletic, and is believed t
Psilophyton dawsonii rev
Polysporangiophyte
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Polysporangiophytes, also called polysporangiates or formally Polysporangiophyta, are plants in which the spore-bearing generation has branching stems that bear sporangia. The name literally means 'ma
Trimerophytopsida
…Trimerophytophyta, Trimerophytina, Trimerophytophytina and Trimerophytales. At first most of the early land plants other than the bryophytes (i.e. the polysporangiophytes) were placed in a single class Psilophyta, established in 1917 by Kidston and Lang. As additional fossils were discovered and described, it became…
Aglaophyton reconstruction
Monarch fern sori