Are These New Mexican Fossil Eggs ?

[fossilnmhunter]

Found these in a cluster, in New Mexico in an arroyo (dried river bed) in an area where many other fossils have been found. It's also a volcanic area.  Manly ammonoids have been found. Can you help me identify these? Are they of any value?

[Rockwood]

Sorry. Good old concretions. 

[Kane]

I see concretions.

 

And, as you should know, we do not appraise value on the forum.

[izak_]

Welcome!

I don't think these are eggs, no eggshell or anything, probably concretions. There may be fossils inside though? 

[abyssunder]

They look concretions to me also.

[Miocene_Mason]

And I do agree as well.

[Herb]

nice concretions. As Foozil says there maybe fossils inside if you split them open

 

[fossilnmhunter]

Thanks everybody!! Been wonderin' for a long time! Appreciate it 

Edited December 29, 2017 by Kane
Removed all caps (shouting)

[Crazyhen]

Would love to see if there are any fossil inside the concretion.

[Roberta NJ CA]

I have so many of these "balls" and have realized from this forum that, while interesting, are basically concretions. If one or two might  envelope a fossil I'm more than ready to break them open, but don't know how.  They are harder than a geode and therefore, harder to open.  I've used picky tools and brushes to get them down to just a "ball-like" structure,  but would rather just crack them open... any advice would be very much appreciated!  they take up a lot of room!

 

Roberta

[Rockwood]

4 hours ago, Roberta NJ CA said:

any advice would be very much appreciated!

If you are the impatient type a sledge hammer an goggles will do it. Otherwise research the freeze/thaw method. Likely you will get good info right on this site. 

[Plax]

slowly squeezing in a vice works on some, a hammer works on all of them eventually

[Miocene_Mason]

To be honest, I’d just take a hammer to them. This is because there is no evidence that there woul be fossils in them, other than maybe ammonites you say. 

[RJB]

Good luck. 

 

RB