Ancient Temsky and Dino Bone slabs

Description

Two slabs very old slabs.
Temsky slab, from the late Cretacous period, found in southeastern Idaho.  Ancient fern that grew up to 10 ft in height.
Dino bone slab from an estate sale, not sure of the age, but probably found in found in southeastern Utah.
Both are solid and ready to display or work.
I can't guarantee that there aren't any micro fractures, but none are apparent.
3.5 ozs total weight