Ceratopsian Frill? Just rock?

[Dino Dad 81]

Hi all,

 

I’ve been putting in time to working the clay matrix off of this bone/rock from the Lance formation in Weston, Wyoming. In the process, I’ve gone back and forth on whether it’s just a rock and no fossil to now thinking it may be a sizable chunk of ceratopsian frill. Any help would be much appreciated as I hate putting in the time and having to wonder if it’s even a fossil at all.

 

If it is a fossil, how agressive do you think I should be about working matrix off vs leaving it as-is?

 

Thanks!!

 

 

[Dino Dad 81]

Sorry the order of the pics is pretty chaotic 

[Troodon]

Looks geologic

[Dino Dad 81]

Thanks, @Troodon. Given that, I'll give it some less cautious last effort and then, most likely, dump it.

[Dino Dad 81]

Hi @Troodon,

Here's a picture of it wet. Could it be a big coprolite?

 

Thanks,

 

[Dino Dad 81]

@Fossildude19, please let me know what you think.

[Fossildude19]

Not seeing anything here, either.

[jpc]

I see a rock.