3D Silurian Calocystites Cystoid Fossil

Calocystites jewetti

Phylum Echinodermata, Class Cystoidea

Geological Time: Silurian

Size (25.4 mm = 1 inch): Cystoid fossil is overall: 50 mm, Calyx: 25 mm tall by 20 mm across on a 57 mm by 80 mm matrix

Fossil Site: Rochester Shale Formation, Rochester, New York State

Code: AW66

Price: Sold


3D Silurian Calocystites Cystoid Fossil from Rochester ShaleDescription: Cystoids are relatives of the crinoids that have oval rather than rounded calyces. They were either stalkless or attached to a stalk much like crinoids. Their triangular pores distinguish them from all other echinoderms. They arose during the Late Cambrian and became extinct during the Late Devonian (~500-375 million years ago). Like all other echinoderms they typically would disarticulate shortly after death. This one must have been quickly buried to allow it to be preserved as you see it here with an attached stem.

Fossils for Sale

click crinoid pictures to enlarge


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