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(Click Photo to Enlarge)
Name:
Strobilocystites calvini
Geologic Age: Devonian
Stratigraphic detail: Cedar Valley Formation
Location: Linn County, Iowa
Comments: Strobilocystites is one of the youngest
cystoids known to exist. These primitive echinoderms are usually found in
Ordovician and Silurian rocks - very few are found in Devonian age layers -
and none are found in younger sediments. This cystoid is highly uncommon and
multiple specimens are EXTREMELY rare.
Iowa Strobilocystites 1 $175.00
