Each bid is for one nice examples of the sponge Girtyocoelia beedei from the Lake Bridgeport Formation of Texas. ID card measures ~6 cm wide.

Collected almost 40 years ago. It is a great opportunity to get some nice Pennsylvanian sponges suitable for study, sectioning and display.

Images show typical specimens like the one(s) you will receive.

We combine shipping on all orders.