Lance Fm. IDs

[PaleoNoel]

Hey all, I found these over the summer in Wyoming's lance formation (Maastrichtian, upper cretaceous). I was hoping for some input on these specimens.

First I believe is a small champsosaur vert, the front has a piece chipped off, but it measures 7 mm front to back and about 11 mm wide.

Second I'm not so sure on, it's vaguely shaped like a coprolite which would be nice and would make it the second I found on this trip. It seems like it may be geologic. It measures 3.5 cm from top to bottom and has a diameter of about 1 cm.

[fossil_sea_urchin]

Nice finds! Not sure if I can ID.

[Troodon]

Good chance it's  Champsosaurus with that vert..  My vote is geologic on the other.

[digit]

Maybe @jpc has some input?

 

 

Cheers.

 

-Ken

[jpc]

The top one is maybe a half of a champsosaur vert.  tough to tell for sure.  And I think the bottom one is filled in burrow... not common for the Lance.  

[PaleoNoel]

5 hours ago, Troodon said:

Good chance it's  Champsosaurus with that vert..  My vote is geologic on the other.

 

3 minutes ago, jpc said:

The top one is maybe a half of a champsosaur vert.  tough to tell for sure.  And I think the bottom one is filled in burrow... not common for the Lance.  

Thanks, something was telling me that the second piece wasn't a coprolite. Do you have any inclination as to what the burrow could be from?

[jpc]

3 minutes ago, PaleoNoel said:

 

Thanks, something was telling me that the second piece wasn't a coprolite. Do you have any inclination as to what the burrow could be from?

No idea.  I have never seen anything like this in the Lance.. not that I recall anyway.  

[PaleoNoel]

2 hours ago, jpc said:

No idea.  I have never seen anything like this in the Lance.. not that I recall anyway.  

That's interesting...