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1 sty 1978 · Summary In the Paleozoic Era trees appear as tree-like forms of Lycopodium, Sigillaria and Lepidodendron, of Equisetum with Calamites and as genuine ferns with Archeopteris of the Upper Devonian and Seedferns (Pteridosperms) of Carboniferous origin; also as Cordaites and as the first genuine Conifers.
- The past, present and future of the tree of life - ScienceDirect
The tree of life is still a source of insight into...
- The past, present and future of the tree of life - ScienceDirect
Evidence of the emergence of embryophyte land plants first occurs in the middle Ordovician (~ 470 million years ago), and by the middle of the Devonian (~ 390 million years ago), many of the features recognised in land plants today were present, including roots and leaves.
Their basic body plan, leaf shape, type of bark, reproduction and all the other components of their life strategy have evolved over millions of years to help trees survive in their particular environment.
12 lut 2008 · Abstract. Charles Darwin sketched his first evolutionary tree in 1837, and trees have remained a central metaphor in evolutionary biology up to the present. Today, phylogenetics—the science of constructing and evaluating hypotheses about historical patterns of descent in the form of evolutionary trees—has become pervasive within and ...
21 lis 2007 · Early land plants had already started leaking oxygen into the atmosphere, creating soils and providing food and shelter for animals, and the evolution of trees upped the pace of change.
12 kwi 2021 · The tree of life is still a source of insight into evolutionary history, as attested to by the recent debate on the archaeal roots of eukaryotes 61. It also remains a powerful tool for classification.
24 kwi 2024 · Phylogenomic analysis of 7,923 angiosperm species using a standardized set of 353 nuclear genes produced an angiosperm tree of life dated with 200 fossil calibrations, providing key insights into...
