1.1" Edrioasteroid (Unidentified) - Iowa (Special Price)

This is a 1.1" wide Edrioasteroid fossil from the Cedar City Formation near Brandon, Iowa. It comes from an old collection and it's labeled as "probably a new species. Is currently being studied by Bruce Bell". It's a fairly old label, so it's very possible it's been described long ago, though I can't find anything referencing it.

Edrioasteroids are an extinct class of echinoderms that lived from the Ediacaran until the Permian, about 300 million years ago. The living animal would have resembled a pentamerously symmetrical disc or cushion.