Annularia

Sphenophyte Carboniferous-Permian

Annutaria is foliage associated with the giant horsetail Catamites (a sphenophyte). Slender leaflets were arranged in whorls around the smaller stems. Individual leaves were fused at their bases and had a single, unbranched vein running along the length of the leaf. Leaflets were approximately 4 cm in length. Horsetails were abundant in low-lying, marshy areas in the Carboniferous.

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