"Echinodermata Fossil Specimens"

Choice, well-prepped specimens of this distinctive "high-domed" fossil echinoid. Complete and detailed samples. Average size, 1 1/2"to 2" in diameter. Germany.

Large, display-quality blastoid.

Unusual well-formed sedimentary bodies believed to have formed from the aggregates of algal organisms and cyanobacteria in ancient waters.