Tetraxylopteris
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Tetraxylopteris is a genus of extinct vascular plants of the Middle to Upper Devonian. Fossils were first found in New York State, USA. A second species was later found in Venezuela.
Tetraxylopteris reconstruccion
Tetraxylopteris sp. fossil
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
Tetraxylopteris
…Tetraxylopteris in a paraphyletic stem group, basal to the seed plants (spermatophytes). It is grouped with Pertica, traditionally classified as a "trimerophyte" rather than a progymnosperm like Tetraxylopteris. Other researchers have produced rather different analyses. Rothwell's analysis separates the…
Psilophyton dawsonii rev