Archimedes “Screw” Bryozoan (012621y) 




Near Complete Archimedes Screw (012621y) 
Name: Archimedes sp.
Age: Mississippian Age -345 million yrs
Formation: Warsaw Formation
Location: Adams County, Illinois

Archimedes is a genus of bryozoans with a calcified skeleton of a delicate spiral-shaped mesh that was thickened near the axis into a massive corkscrew-shaped central structure. The most common remains are fragments of the mesh that are detached from the central structure, and these may not be identified other than by association with the “corkscrew structure”. Specimens in which the mesh remains attached to the central structure are rare. Like other bryozoans, Archimedes formed and lived in colonies.   

*FANTASTIC Extremely well detailed and inflated specimen  * Probably the best you will ever see

  Includes stand, Information sheet, COA, and free USA Shipping.

Additional information

Weight 7 lbs
Dimensions 9 × 9 × 9 in