Possible Bone Fragment

[Lemissap]

Hello! I’m hoping to identify this fossil I found while wandering a mesa just south of Santa Fe, New Mexico. It was laying neatly in the sand just waiting to be found. The pits on the end look very much like bone marrow. I chose to leave it at the ranch where I found it, so I only have one pic. I could get more if needed! Thanks!

Edited December 31, 2018 by Lemissap
Autocorrect

[Tidgy's Dad]

Pics of the ends may change my opinion, but looks like a concretion, or possibly an burrow infilling to me to me. 

[Lemissap]

Interesting! I’ll have to wait a couple of weeks for more pictures. I’m wishing I had brought it home now, such a neat find! It was pretty heavy and looked just like marrow pitting on the ends. 

[sixgill pete]

25 minutes ago, Tidgy's Dad said:

Pics of the ends may change my opinion, but looks like a concretion, or possibly an burrow infilling to me to me. 

I agree with Adam on this. I do not think this is bone.

[ynot]

+1 for concretion.

[masonboro37]

I agree with both members, looks like a burrow internal mold, concretion maybe. I have found several in my area which are similar. The ones which I have found are crustacean burrows.  Nice find by the way! 

[DeepTimeIsotopes]

1 hour ago, Lemissap said:

Interesting! I’ll have to wait a couple of weeks for more pictures. I’m wishing I had brought it home now, such a neat find! It was pretty heavy and looked just like marrow pitting on the ends. 

If it’s fairly heavy like a chunk of metal, it’s probably an iron concretion. Next time you’re by it, try sticking a fairly strong magnet to it. Sometimes they’ll stick confirming it’s iron. 

[Lemissap]

Thanks everyone! I’m agonizing over not taking more pictures! I was convinced it was bone.