Search results
Results from the WOW.Com Content Network
Psilophyton is a genus of extinct vascular plants. Described in 1859, it was one of the first fossil plants to be found which was of Devonian age (about 420 to 360 million years ago ). Specimens have been found in northern Maine , USA; Gaspé Bay , Quebec and New Brunswick , Canada; the Czech Republic ; and Yunnan , China.
The class was created in 1917 by Kidston and Lang for fossils found in the Rhynie Chert Bed. [4] Three genera were initially included, Rhynia, Horneophyton and Psilophyton. All lacked leaves and true roots, consisting only of branched stems; however they were considered to contain vascular tissue. [1] Additional fossil genera were added later.
Trimerophytopsida (or Trimeropsida) 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 to be the ancestral group from which both the ferns and seed plants evolved.
Fossil of the primitive Devonian vascular plant Psilophyton †Psilophyton †Pteria – report made of unidentified related form or using admittedly obsolete nomenclature †Ptychagnostus †Pugnax †Receptaculites †Rhynchonella †Rothpletzella † Sarcinula †Schwagerina †Sinutropis †Skenidioides †Solenopora †Solenopora compacta
List of extinct animals of Romania; List of fossil species in the La Brea Tar Pits, California, United States; List of fossil species in the London Clay, England;
This list of the Cenozoic life of Maine contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Maine and are from 66 million years of age to geologically recent. Astarte †Astarte borealis †Astarte castanea †Astarte elliptica †Astarte montagui †Astarte sulcata; A living Bison ...
Abadehella † Acanthocladia † Acanthopecten † Acanthopecten carbonifer – or unidentified related form † Acanthopecten delawarensis – or unidentified related form † Acanthophyllum Fossil of the Silurian-Middle Devonian trilobite Acanthopyge † Acanthopyge † Acervularia † Aclisina – tentative report † Acmarhachis † Acmarhachis acutus † Acrosaccus † Acrosaccus shuleri ...
The progymnosperms are an extinct group of woody, spore-bearing plants that is presumed to have evolved from the trimerophytes, and eventually gave rise to the spermatophytes, ancestral to both gymnosperms and angiosperms (flowering plants). [1]