This exceptionally detailed cystoid from the famous Silurian Rochester Shale beds of Caleb’s Quarry in Middleport New York.
This cystoid is on a massive shale block measuring 8 1/4 inches by 6 1/2 inches and over 1 inch thick to add to the stability of this magnificent echinoderm. The 1.14 by .91 large inch theca shows exceptional detail and the plates are highly intricate. Also exhibiting 9 brachials or arms with fine detail, down to many of the pinnules. The largest brachial is 3 1/4 inches long though part was lost during collection.. The stem is 3 inches long and exhibits great detail. The cystoid is missing some of the center part of a few brachials lost during collection and recovery.
It was expertly and meticulously prepared using micro air abrasive technology.
This cystoid was killed and buried by a storm hence the brachials pointing in the same direction. The shale is a very fine grained shale showing the slurry that washed over the cystoid was comprised of small particles of sand, silt and clay.
A must have for any collector of Rochester Shale fossils.
This is the specimen you will receive.
Middleport, New York