A cartoon of Cooksonia, reconstructed with non-photosynthetic axes, dependent on its gametophyte, as per Boyce (2008)
Scientific classification
Kingdom:
Plantae
Clade:
Tracheophytes
Stem group:
†Rhyniophytes
Form taxon:
†Cooksonioidea
Genus:
†Cooksonia Lang 1937 emend. Gonez & Gerrienne 2010[3] non Druce 1905
Type species
Cooksonia pertoni
Lang 1937
Species
C. paranensis Gerrienne et al. 2001
C. pertoni Lang 1937[Note 1]
?C. acuminata Mussa et al. 2002
?C. barrandei Libertín et al. 2018
?C. cambrensis Edwards 1979
?C. degrezensis Senkevich
?C. downtonensis Heard 1939
?C. rusanovii Ananiev 1960
?C. zhanyiensis Li & Cai 1978
Cooksonia is an extinct group of primitive land plants, treated as a genus, although probably not monophyletic. The earliest Cooksonia date from the middle of the Silurian (the Wenlock epoch);[1] the group continued to be an important component of the flora until the end of the Early Devonian, a total time span of 433 to 393 million years ago. While Cooksonia fossils are distributed globally, most type specimens come from Britain, where they were first discovered in 1937.[4]Cooksonia includes the oldest known plant to have a stem with vascular tissue and is thus a transitional form between the primitive non-vascular bryophytes and the vascular plants.[5]
^ abCite error: The named reference Edwards1980 was invoked but never defined (see the help page).
^Cite error: The named reference Boyce2008 was invoked but never defined (see the help page).
^Cite error: The named reference GonezGerrienne2010a was invoked but never defined (see the help page).
^Cite error: The named reference Lang1937 was invoked but never defined (see the help page).
^Freeman, Scott; Herron, Jon C. (2004). Evolutionary analysis (3rd ed.). Upper Saddle River, NJ: Pearson Education. p. 816. ISBN 978-0-13-101859-4.
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Cooksonia is an extinct group of primitive land plants, treated as a genus, although probably not monophyletic. The earliest Cooksonia date from the middle...
Non-vascular plant Pteridophyte D. Edwards; Feehan, J. (1980). "Records of Cooksonia-type sporangia from late Wenlock strata in Ireland". Nature. 287 (5777):...
Cooksonia trimeni is a butterfly in the family Lycaenidae first described by Hamilton Herbert Druce in 1905. It is found in the Democratic Republic of...
Cooksonia neavei, or Neave's tiger mimic, is a butterfly in the family Lycaenidae. The species was first described by Hamilton Herbert Druce in 1912....
Cooksonia aliciae is a butterfly in the family Lycaenidae. It is found in Malawi. Wikimedia Commons has media related to Cooksonia aliciae. Wikispecies...
earliest-known representatives of this group are Cooksonia. Most of the sediments containing Cooksonia are marine in nature. Preferred habitats were likely...
Wikimedia Commons has media related to Cooksonia ginettae. Wikispecies has information related to Cooksonia ginettae. Cooksonia at Markku Savela's Lepidoptera...
has information related to Cooksonia abri. Cooksonia at Markku Savela's Lepidoptera and some other life forms "Cooksonia abri (Collins & Larsen, 2008)"...
spread by vegetative growth and spores. The earliest land plants such as Cooksonia consisted of leafless, dichotomous axes with terminal sporangia and were...
been identified as a polysporangiophyte. Fossils assigned to the genus Cooksonia, which is more certainly a polysporangiophyte, have been dated to the...
early arachnids, fungi, and centipedes. The evolution of vascular plants (Cooksonia) allowed plants to gain a foothold on land. These early plants were the...
this shift from Ice House to Hot House. By the end of the Ordovician, Cooksonia, a slender, ground-covering plant, became the first known vascular plant...
transition to land in the Silurian period more than 425 million years ago (see Cooksonia). The possession of xylem tracheids defines the vascular plants or Tracheophytes...
to bear water-transport tubes are Silurian plants placed in the genus Cooksonia. The early Devonian pretracheophytes Aglaophyton and Horneophyton have...
this group (mostly from the northern hemisphere) are placed in the genus Cooksonia. They had very simple branching patterns, with the branches terminated...
possessed vascular tissue with S-type tracheids. Cooksonioids, such as Cooksonia pertoni, C. paranensis and C. hemisphaerica, had radially symmetrical...
The evolution of vascular plants (mainly spore-producing ferns such as Cooksonia) allowed land plants to gain a foothold further inland as well. During...
honorific for a person or place. Examples: Dickinsonia ("for Dickinson"); Cooksonia ("for Cookson"); Coloradia ("for Colorado"); Edmontonia ("for Edmonton");...
living organism in its day by far; in comparison, the contemporary plant Cooksonia only reached 6 centimetres (2.4 in) in height and itself towered over...
(vascular plants). This theory may be supported by observations that smaller Cooksonia individuals must have been supported by a gametophyte generation. The...
organs (sporangia). Fossils found in Scotland were initially described as Cooksonia caledonica. A later review, which included new and more complete fossils...
has information related to Erysimum jugicola. Wikimedia Commons has media related to Erysimum jugicola. Biolib Flora Italiae Cooksonia Tela Botanica...
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