What Is It?

[Rockin' Ric]

Found this last year and thought it was a Gastropod Steinkern of some kind? On second thought, could it be a coprolite... if coprolite, its a perfect symetrical pile of...? Found in Cretaceous material while hunting for shark teeth. Does anyone out there know what this is... its smooth and heavily worn on the bottom side?

Edited December 20, 2023 by Rockin' Ric

[Al Dente]

9 minutes ago, Rockin' Ric said:

thought it was a Gastropod Steinkern of some kind

I agree.

[FossilDAWG]

I agree with gastropod.  Some gastropods are not perfectly regular as they grow, plus weathering has affected the surface of this internal mold.

 

Don