Caryocrinites Cystoids

$275.00

1 in stock

Description

Carycrinites Cystoids Silurian Fossils
Own a classic fossil from a classic site.
Two Caryocrinites cystoids from the Silurian Rochester Shale and are
harder to obtain from this private quarry in Middleport, New York

These fossils were collected decades ago and just recently prepared by our prep lab..
Here is a Super detailed cystoid from a classic site in NY.

Fossils from here are preserved in great detail. Because of the wide variety and number of these animals it is assumed they lived in dense communities,

Caryocrinites Cystoids are animals related to modern day living starfish are cystoids but they have modern relatives called crinoids. So these crinoids animals live in the deep oceans today.

Cystoids had many varied species but they shared body styles. Caryocrinites cystoids consist of a stem so it could  anchor to the sea floor with a “holdfast” and a theca. And it had arms to filter food from the water.

This block with a Silurian Fossil Caryocrinites cystoids has exceptional detail. The large one is 7.5  inches long and has a Bryozoan mass on the stem.  The second is 4 3/4 inches long and the matrix is 9 1/2 by 7 1/2 inches . They are attached to a bryozoan colony as is usual. This is because they needed a hard surface to attach to. It has been prepared using air abrasive tools.

During the Silurian Period much of New York State was a warm and shallow tropical sea. Because of it’s location near the equator it was prone to violent storms. These storms were the reason we have such beautifully preserved fossils. Storms would was soft mud and sand into the shallow sea covering the animals so that they may be preserved. They are found in a soft and very brittle gray shale several feet below the surface topsoil.

https://www.paleojoe.com/product-category/fossil-invertebrates/echinoderms/