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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.
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.
This list of the Cenozoic life of Alaska contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Alaska and are between 66 million and 10,000 years of age. Acanthocardia; Acirsa; Acmaea; Agonum †Ainus; A living Alces, or moose Alces; Alnus; Alopex †Alopex lagopus; Alvania; Amara ...
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 ...
The small shelly fauna, small shelly fossils (SSF), or early skeletal fossils (ESF) [1] are mineralized fossils, many only a few millimetres long, with a nearly continuous record from the latest stages of the Ediacaran to the end of the Early Cambrian Period. They are very diverse, and there is no formal definition of "small shelly fauna" or ...
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This list of the prehistoric life of Georgia (U.S. state) contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Georgia (U.S. state). Precambrian
[4] [5] [6] Other researchers argue that phylogenies based solely on molecular data without the inclusion of carefully evaluated fossil data based on whole plant reconstructions, do not necessarily completely and accurately resolve the evolutionary history of groups like the euphyllophytes.
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