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Crinoidal
material is very rare in the Abrigo, only a few specimens of
what appears to be crinoid ossicles were found after countless
hours of searching the limestones, even microscopically. Rhombiferen
plates were also found on two different slabs which would be
one of the earliest members of this bizarre animal group. We
did not find any identifiable parts of the primitive Gogia, however
we cannot rule out the ossicles we found were from their feeding
arms.
Upper
Cambrian Pelmatozoans
Rhombiferan of
various types on the left, and Gogia a crinoid like animal.
 
Click on images
for the full size:
|
Stem
or feeding arm ossicle. This could be an early eocrinoid stem,
a Rhombiferan stem or arm or Gogia feeding arms. It is only a
few mm across. |
|
The
ONLY other stem ossicle we found in the Abrigo. It too is quite
small! |
|
Rhombiferan
plates from the calyx. The animal would have been perhaps half
an inch in diameter with a short stem. |
|
Another
Rhombiferan (Cystoid) plate. |
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