Silurian Bryozoans & Cystoid


1 in stock


Here is your chance to own a classic fossil from a classic site.
HARDER and Harder to obtain fossils from this private quarry in Middleport, New York

These are a Rochester Shale Silurian Bryozoans & Cystoid fossils in a cluster, and impression of a part of a Trimurus. And a cystoid stem with an additional bryozoan. These were collected decades ago and just recently prepared by our prep lab..
There is also a large and Super detailed cystoid theca from a classic site in NY.

Fossils especially these Rochester Shale Silurian Bryozoans & Cystoid from this site are preserved in Spectacular detail. Because of the wide variety and number of these bryozoans it is also assumed they lived in dense communities,

These Rochester Shale Bryozoans & Cystoid are actually animals. They have modern relatives that live in the oceans today. So then they lived in shallow salt water seas and lagoons. They lived during the Paleozoic.

Although there were many species of Rochester Shale Bryozoans, they shared a basic body style. They were filter feeders and because they were filter feeders they had tentacles that would grab the food particles. .

Rochester Shale Bryozoans and Cystoids thrived in the warm shallow inland sea that covered the area during the Silurian Period some 420 million years ago. The Bryozoans living near what is now Middleport New York were established near an ocean delta system that periodically buried the colonies in silt. This silt eventually hardened into stone that preserved the them in glorious detail.

The large branching colony is 4 inches by 2 inches. The cystoid theca is a large 1 1/2 inches by 1 1/4.