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Topic: Calamitaceae

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	Introduction to the Calamitaceae (Site not responding. Last check: 2007-10-17)
		The Calamitaceae include the great "calamite trees" of the Carboniferous Period.
		Most paleobotanists agree that they are closely related to the living horsetails in the Equisetaceae.
		Mature stems of members of the Calamitaceae, like those of their living counterparts, were hollow, and frequently filled up with sediment after the death of the plant.
	www.ucmp.berkeley.edu /plants/sphenophyta/calamitaceae.html (119 words)

	Introduction to Equisetum and the Class Sphenopsida
		The Equisetales include the major families Archaeocalamitaceae, Calamitaceae, and Equisetacae.
		Interestingly, the Calamitaceae closely resembled the Equisetaceae in having rhizomatous growth, fused leaf sheaths at the nodes, and in many other respects.
		The chief differences between the two families lie in cone morphology and in the lack of secondary (woody) growth in the Equisetaceae in contrast to the presence of secondary growth in the Calamitaceae (
	www.fiu.edu /~chusb001/GiantEquisetum/Intro_Equisetum.html (3668 words)

	Signs of Creation.com
		As can be seen in the fossil, it was a vascular plant whose branches subdivide dichotomously, but also display lateral ramifications.
		Fossil remains of the leaves of the family Calamitaceae.
		This species was common in the U.S., Canada, China and Europe in the Carboniferous Age.
	www.signsofcreation.com /plants09.htm (7696 words)

	Botanik online: Pteridophyta - Equisetatae
		Die Calamitales waren, zusammen mit den schon beschriebenen Lepidodendrales, im Oberdevon und im Karbon vorherrschend.
		Im Vergleich zu den Calamitaceae sind die Asterocalamitaceae als die ursprünglichere Familie anzusehen.
		Ihr Holz war recht einfach strukturiert, die Blätter waren bis zu 20 Zentimeter lang und mehrfach unterteilt.
	www.biologie.uni-hamburg.de /b-online/d45/45e.htm (565 words)

	"Lycostrobus" chinleana, an equisetalean cone from the Upper Triassic of the southwestern United States and its ...
		symmetrical similar to the bracts in the Calamitaceae that are
		By filling the gap between the two, this fossil indicates that
		Equisetum could be a direct descendant of the Calamitaceae.
	www.amjbot.org /cgi/content/full/86/10/1391 (7715 words)

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