Some taxa exhibit characters interpreted as potentially related to cold hardiness: ..... on the sporangium of Pertonella as a diagnostic feature of this genus, ..... Some fossil plants of early Devonian type from the Walhalla Series, ...
linkinghub.elsevier.com/retrieve/pii/S0034666701000604
The oldest known vascular plant, Cooksonia, possesses small, .... Trimerophytes have many features in common and exhibit an almost continuous range of variation. ..... spores produced by various types of fossil plants, include the following: (1) a .... Early Devonian plant fossils from a southern England borehole. ...
linkinghub.elsevier.com/retrieve/pii/0034666780900093
magnification ´ 0.4. j, Cycas (seed plant) sporophyte showing leaves and terminal cone with seeds; magnification ´ 0.05 (photograph courtesy of W. Burger). Figure 2 a, Longitudinal section of part of a silicified early fossil gametophyte;
faculty.virginia.edu/bio202/Kendrick&Crane%20'97%20orig... faculty.virginia.edu/bio202/Kendrick&Crane%20'97%20origin%20evolution%20of%20land%20plants.pdf
The comparable resistant structures in fossil plants are considered to be of similar ..... Cooksonia species also exhibit interspecific differences in spore .... From this, many workers conclude that a basal feature of early plants is having .... An exceptional specimen of the early land plant Cooksonia paranensis, ...
arjournals.annualreviews.org/doi/pdf/10.1146/annurev.ec... arjournals.annualreviews.org/doi/pdf/10.1146/annurev.ecolsys.39.110707.173526
In reviewing the fossil evidence about early land plants, a number of ideas ..... Thus, although many regard Cooksonia as the earliest vascular plant, the ..... an order of extinct plants that exhibited many of the primitive features ...
www.jstor.org/stable/1222087
between the Psilotaceae and fossil plants involve, on the one hand, ... The oldest vascular plant known to date is the genus Cooksonia, ... the Psilotaceae in relation to more or less similar features in fossil plants. ..... exhibit an early stage in the differentiation of axes or shoot systems, in particular ...
www.springerlink.com/index/EQ45P6W070288142.pdf
Evolutionary history of plants - Wikipedia, the free encyclopedia
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Plants have evolved through increasing levels of complexity, from the earliest algal mats, through bryophytes, lycopods, ferns and gymnosperms to the complex angiosperms of today. While the simple pla...
en.wikipedia.org/wiki/Evolutionary_history_of_plants
Following a review of some of the other Silurian floras, particularly the Baragwanathia-bearing Lower Plant Assemblage of Victoria, Australia, ... From US383, the lowest plant fossil site in this stratigraphic section, ... The features of US688-8152 ally it most closely with the Pragian Bathurst Island species, which has not yet...
www.amjbot.org/cgi/content/full/89/6/1004
Vascular plants appeared by 350 million years ago, with forests soon following by 300 million years ago. ... Figure 2. The fossil records of some protist and plant groups. ... Rhynia, shown in Figure 9, is another early vascular plant. Like Cooksonia, it lacked leaves and roots. One of the species formerly assigned to this genus,
www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookDiver... www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookDiversity_5.html
One of the most famous fossil plant localities that formed during the Devonian is the Rhynie Chert from Scotland. This deposit is dated as early Devonian and records in fine detail cells of the earlier land vascular plants as well as other fossils. ... Rhynia is an early vascular plant. Like the Silurian plant Cooksonia,
www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookPaleo... www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookPaleo4.html