DOUBLE ACETOCRINUS - CARBONIFEROUS IOWA, USA.

Acetocrinus sp.

Three individual Crinoids on grey limestone. Nice preservation. Calyx and arms on two. 

Lower Carboniferous, Mississippian, Gilmore City Formation.
​​​​​​​Gilmore City, Iowa, USA.

Matrix : 6.3 x 6 x 1 cm.