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Calamitaceae

A Dictionary of Plant Sciences | 1998 | | © A Dictionary of Plant Sciences 1998, originally published by Oxford University Press 1998. (Hide copyright information) Copyright

Calamitaceae (horse-tails) A family of plants that were among the dominant vegetation of the Carboniferous swampland floras. They had a sporophyte that resembled a tree, with much secondary thickening in the stem and branches. Some grew to a height of 20–30 m. They appeared in the Upper Devonian and became extinct early in the Triassic.

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