I found this fossil while hunting for ammonites in Rio Puerco valley. What is it?

[seejay]

Hello, I was out fossil hunting the other day and found this. At first, I thought it was a piece of ammonite and I am very new at this so I have no clue really. I have found a few ammonites now and the more I look at this thing the more I think it looks different. It's very clearly what looks to be bone(?) or solid shell that is the same shape on both sides, it has 7 extrusions going around the sides of the bottom half and the second half of the upper bone portion has broken off. 

 

Any ideas? Thanks

 

 

 

 

 

 

 

 

 

Thanks to PFooley for helping me check out some new areas in my state!

[seejay]

Its encased in stone from the nodules I was hunting around by the way.

[Randyw]

You were correct to begin with i believe. Its a partial ammonite.

[seejay]

16 minutes ago, Randyw said:

You were correct to begin with i believe. Its a partial ammonite.

Awesome thank you

[Fossildude19]

Looks like possibly a Spathites puercoensis.

[Randyw]

It looks interesting. Id love to see it prepped out!

[Mainefossils]

Nice ammonite! I think that @PFOOLEY would be able to help with this, he collects many stunning specimens from the same area. Happy Hunting! 

[PFOOLEY]

On 9/30/2021 at 7:38 PM, Fossildude19 said:

Looks like...Spathites puercoensis.

 

This is correct.

 

Nice work @seejay, I am glad to see you are finding some fossils at that site...many have went and been skunked.@Opuntia were discussing that recently...a little patience goes a long way. 

 

Good job...tell the Puerco I said hello next time you're out.

[seejay]

1 hour ago, PFOOLEY said:

 

This is correct.

 

Nice work @seejay, I am glad to see you are finding some fossils at that site...many have went and been skunked.@Opuntia were discussing that recently...a little patience goes along way. 

 

Good job...tell the Puerco I said hello next time you're out.

 

Will do man. thank you for all the help over the years, like you said the patience and persistence finally paid off.

[PFOOLEY]

You are welcome.