Wednesday, July 11, 2012

Mississippian microfossil


This critter is Meramecian (middle Mississippian), found in an echinoderm-dominated mixed-particle packstone, and is about 300 um (third of a mm) across. I think it's an odd echinoderm sclerite, but is it?

1 comment:

Denis Bates said...

I'm not sure that this is an echinoderm. The pattern of rounded spheres(?)doesn't look like stereom. Scale is also very small.