What is this?

[Ramon]

Hello, we found this bone fragment last month. It comes from Coahuila, Mexico, from the Cerro del Pueblo Formation, which is late Campanian in age (~72 million years old). All sort of dinosaur fossils are found at the formation, including ceratopsians, hadrosaurs, and tyrannosaurs.

 

To me it looks like an ungual (toe bone). But the end of the piece is more blunt and rounded than most other ornithischian unguals I’ve seen online.

 
Can any of y’all ID this piece, or is it just a regular unidentifiable chunk of bone? 

 

 

 

[Troodon]

Might be a hadrosauridae hand ungual or partial carpal.  They come all different shapes.  

Here are a couple from the hadrosaur Edmontosaurus, Hell Creek Fm.

 

Carpal and terminal ungual.

[Ramon]

59 minutes ago, Troodon said:

Might be a hadrosauridae hand ungual or partial carpal.  They come all different shapes.  

Here are a couple from the hadrosaur Edmontosaurus, Hell Creek Fm.

 

Carpal and terminal ungual.

Thank you so much for the ID!!
And wow, those are really well-preserved!! 

Most of the stuff that we found in the desert has probably been exposed on the ground for thousands of years, which took a toll on the condition of the fossils.