Gogia sp nov - eocrinoid or dawn crinoid
Echinodermata, Eocrinoidea
Geologic Time: Middle Cambrian
Size (25.4 mm = 1 inch): 65 mm long and 54 mm wide on a 90 mm by 130 mm matrix
Fossil Site: Spence Shale, Box Elder County, Utah
Fossil Code: EC128
Price: $175.00 - sold
 Coming
from the Cambrian Spence Shale deposits of Box Elder County, Utah
this is a fine multiple 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. |
