Gogia sp nov - eocrinoid or dawn crinoid
Phylum Echinodermata; Family Eocrinoidea
Geologic Time: Middle Cambrian
Size (25.4 mm = 1 inch): 85 mm long and 45 mm wide on a 130 mm by 85 mm matrix
Fossil Site: Spence Shale, Box Elder County, Utah
Code: EC129
Price: $150.00 - sold
 Coming
from the Cambrian Spence Shale deposits of Box Elder County, Utah
this is a fine example of a NEW SPECIES of Gogia , a member of the
Class Eocrinoidea. Eocrinoids (“dawn crinoids”), were
among the earliest groups of Echinoderms. They had a vase-shaped body
(calyx), covered by plates that were symmetrical and had a bifurcated
brachiole, a slender arm-like structure for food-gathering that closely
resembled those in cystoids. The early Eocrinoids were attached to
the bottom by a thick holdfast. Later members had an elongated stalk
much like the true crinoids which evolved later. This particular species
is undergoing description, and differs from G. spiralis in its larger
size and untwisted brachioles. |
