2.75" Fossil Jellyfish (Essexella) In Ironstone Pos/Neg - Illinois

This is a fossil jellyfish (Essexella asherae) preserved in a 2.75" wide ironstone nodule from the Carbondale Formation near Essex, Illinois. This specimen contains both the positive (convex) side of the fossil and the accompanying negative impression. The arms and bell (body) of the jelly are what you are seeing. Soft-bodied organisms are rare in the fossil record making this specimen a unique addition to a collection.

Essexella is a scyphozoan jellyfish, that is to say: a true jelly.

Each half of the nodule is accompanied by an acrylic display stand.