Silurian Homocrinus Crinoids

$75.00

1 in stock

Description

Silurian Homocrinus Crinoids from the Rochester Shale of New York.

Here is your chance to own this Silurian Homocrinus Crinoids block from a classic site.
Harder and Harder to obtain fossils 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 crinoids from a classic site in NY.

Fossils from this site are preserved in Spectacular detail. Because of the wide variety and number of these crinoids it is also assumed they lived in dense communities,

Crinoids are actually animals related to modern day starfish. They are echinoderms. They have crinoid relatives that live in the deep oceans but then they lived in shallow salt water seas and lagoons. Crinoids lived during the Paleozoic and were most prevalent during the Mississippian Period.

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

This block with a Silurian Homocrinus Crinoids has exceptional detail.

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.

This is a block with a 3 3/4 inch long crinoid stem and a small grouping of Homocrinus parva. But these Homocrinus are very small crinoids with hair sized arms and a very small triangular calyx. These are often overlooked by the quarry operators and especially crinoid collectors. They are quite small but are quite collectable.

Because they are so small and overlooked, this is definitely a must have for Rochester Shale Lagerstatte collectors.