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| Huge, Rare Archaeocidaris from St. Louis |
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ECHINOIDS
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| Stock Number XIEC75 |
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Name:
Archaeocidaris wortheni
Age: Mississippian
Formation: St. Louis Formation
Location: St. Louis, Missouri
Size: Urchin is over 6 inches including spines
This specimen is not for sale
Click here for similar specimens that are for sale
This is a very rare and important find. It is a HUGE Archaeocidaris wortheni from the Mississippian of St. Louis. Fossil echinoids from the St. Louis area are famous around the world and have been extremely sought-after by collectors for decades. These urchins were found YEARS ago, stored in a box, and just now opened and prepared - when they're all gone, they're GONE! These spiny urchins are larger than the Lepidocidaris found in the Mississippian Warsaw Formation, and are OLDER than the Pennsylvanian Archaeocidaris from Texas. This massive urchin is complete with MANY long spines still intact. Most of the types of urchins from this site are much smaller (there are three species!), and larger ones are extremely rare. There is not much extra matrix, but the echinoid is very nice. This is a very large, very rare example of a Mississippian Archaeocidaris from the St. Louis Formation, offered exclusively through EXTINCTIONS Club.
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