032420d

Thin sections of a Mississippian fossil hash from north Alabama, technically an echinodermal bryozoan grainstone (Dunham classification). All images are 2.5 mm wide.

 Bryozoan fragments, with a few echinoderm ossicles and brachiopod fragments.

 Echinoid spine in bryozoan hash.

 Bryozoan grainstone.

 Large brachiopod shell fragment in bryozoan grainstone.

Large and small echinoderm ossicles in bryozoan-dominated grainstone.