Name :Hypsiclavus huntsvillensis (Sumrall, 1996)
Age: Carbonifère, Mississippien, Chesterian ,Bangor Limestone Formation
Location : Franklin county , Alabama, USA

This is from Edrioasteroidea family , but it is an Isophorida .The diameter is 2.7cm onto a slab of natural matrix that measures 8 x 6.5 cm.
The cone is convexe.