Species of Calamites

		Calamites cistii Internodes (sections between two nodes) mostly longer than broad. No branch scars at the nodes. Piesberg (Germ.), Westfalian D. Width of the photo 26 cm. .
		Calamites carinatus Internodes longer than broad. Two large opposite branch scars at the nodes. Piesberg (Germ.), Westfalian D. Width of the photo 20 cm. Move the cursor over the photo to see the other side of the stem.
		Calamites schutzei(formis) At some nodes small branch scars, separated from each other (on the left at the photo). Internodes not of equal length: the smallest above the ring of scars, the following ones increasing in length, till the next ring of scars. Piesberg, Westfalian D. Height photo 10 cm.

Calamites undulatus Ribs with a zigzag pattern. Internodes mostly broader than long. Sometimes small circular branch scars at the nodes. Ibbenbüren, Westfalian B. Height of the photo 6 cm.	Calamites goeppertii Internodes broader than long, about equal in length. At some nodes a closed ring of branch scars. Ibbenbüren, Westfalian B. Height photo 6 cm.	Calamites suckowii Internodes mostly broader than long. No branch scars at the nodes. Ibbenbüren (Germ.), Westfalian B. Width of the photo 11 cm.

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