Asterophyllites equisetiformis

Age: Carboniferous. 
Location: Graissessac, Hérault, France. 
Pteridophyte that belongs to the class of horsetails, formed by a rhizome (underground stem) from which upright shoots with knots and internodes. Leaves (microfilms) arranged in whorls are inserted into the nodes.

Measures: 6,8 cm x 4,3 cm