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Name:
Gogia spiralis
Age: Cambrian
Formation: Wheeler Formation
Location: Millard County, Utah
Size: Cystoid is 1.6 inches long
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Here is an extremely nice specimen of Gogia spiralis from the Middle Cambrian of Utah. This primitive echinoderm used to be known as an eocrinoid, but has now been re-classified as a cystoid. This cystoid exhibits wonderful detail. The elongate, multi-plated, sac-like holdfast is intact and very distinct. The large-plated, nodose calyx is quite evident, and the twisted, spiraled arms are beautifully displayed in a splayed position. The fossil has great color and contrast and is nicely presented on the plate of shale. This is a fine example of this very old echinoderm.
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