Pentremites symmetricus – Carboniferous – USA

Pentremites symmetricus

Upper Mississippian Ridenhower Formation,

St. Clair County, Illiois, U.S.A

 

 

Specimen 01

 

DOUBLE BLASTOID FOSSIL Pentremites Crinoid Fossils

Item number: 350121106397

Winning bid: US $61.00 

Ended: Nov-16-08 19:26:00 PST

Winning bidder: p***a

Seller: fossilfarm-uk

 

Double Blastoid Fossil

Pentremites symmetricus Blastoid fossil from the Upper Mississippian Ridenhower Formation, St. Clair County, Illiois, U.S.A. Approx. 350,000,000 years old. A stunning and highly detailled example of this rare species, measuring 3.5″ x 2.7″ x 1″.