Dactylioceras athleticum (Simpson 1955)

That's another nice one, Roger! Are you sure about the ID? It strongly resembles D. athleticum.

Hmmmmmmmmmm...you may just be right there. The ribs are a bit too far apart for tenuicostatum. Thanks. I think I'll just correct that.

I'd agree with you about the ribs, also the preservation looked slightly unusual compared to that of a typical D.tenuicostatum.

Joe

I wasnt aware that something so magical existed. holy crow, I am in love. Spectacular piece,

I know that feeling. You'll become even more awed as you get deeper into the subject of fossils.