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Calamites, genus of tree -sized, spore -bearing plants that lived during the Carboniferous and Permian periods (about 360 to 250 million years ago). Calamites had a well-defined node-internode architecture similar to modern horsetails, and its branches and leaves emerged in whorls from these nodes. Its upright stems were woody and connected by ...
- Calamitaceae
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- Calamitaceae
Calamites. Calamites is a genus of extinct arborescent (tree-like) horsetails to which the modern horsetails (genus Equisetum) are closely related. [1] Unlike their herbaceous modern cousins, these plants were medium-sized trees, growing to heights of 30–50 meters (100–160 feet). [2]
Calamite fossils. Calamites are a type of horse tail plant that lived in the coal swamps of the Carboniferous Period. They were prehistoric relatives of the modern horse tail, but looked more like a pine tree and grew up to 40 feet. They had upward-slanted slender branches, arranged around a bamboo-like trunk in rows spaced several feet apart ...
Calamites. Calamities were horsetail like trees that went extinct about 250 to 360 million years ago. These plants were medium-sized trees, growing to heights of 30-50 meters and about 100-160 feet. The trunk of these trees had an appearance like a bamboo trunk while the leaves were needle-shaped. These calamities reproduced by cloning.
Jan 5, 2023 · Most Calamites were probably less than 10 ft tall, but fossil trunks more than 30 ft long have been reported (Scott, 1920; Rössler, 2012; Taylor, 2014), and some may have been as much as 100 ft tall (Gillespie and others, 1978)!
Jul 9, 2019 · As they stored a lot of atmospheric carbon dioxide in the soil, the Earth cooled. The hot, humid environment that they lived in did not last long past the Carboniferous period, and since many of their traits depended on this environment, they became extinct soon after. This devastating event to plants like Calamites is known to paleontologists ...
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Sep 11, 2017 · Late Palaeozoic horsetails, known as calamites, were one of the dominant types of plant during the Carboniferous and Permian periods. They are prime constitutents of coal deposits. Compared to the single relict genus existing today, the free-sporing herbaceous Equisetum comprising some fifteen living species, their ancestors evolved into a great number of species which inhabited the equatorial ...
