Hexagonaria percarinata Sloss.
Cut and polished slice of a Devonian compound coral. This decorative rock is known as 'Petoskey stone' and is the official Michigan state fossil. Lovely detail of the individual corallites under magnification. A 'beauty'.
Devonian Period.
Petoskey,Lake Michigan, Michigan, U.S.A.
Specimen : 12.7 x 9.8 x 0.8 cm.
