ID help

[Lukas]

My mother found this in southern Oregon on a rockhound beach trip and asked if I could get some ID help. Thank you for any information I can pass on to her. 

[Rockwood]

Cephalopod shell would be what comes to mind, but somehow I wonder.

[Darktooth]

Looks like Spyroceras.

[Ludwigia]

Looks like Spyroceras to me too.

[Rockwood]

 Surprise. There are mesozoic rocks in that corner. 

[Herb]

Silurian cephalopod Dawsonoceras sp possibly

[Rockwood]

Wait a minute. Spyroceras is Devonian ?

Erratic ? 

[FossilDAWG]

No Silurian/Devonian in that area that I have heard of (for what that's worth).

 

There is some Cretaceous.  Maybe a heteromorphic ammonite like Glyptoxoceras?  Were there any other associated fossils?  They might help to pin down an age.

 

Don

[Lukas]

15 hours ago, FossilDAWG said:

No Silurian/Devonian in that area that I have heard of (for what that's worth).

 

There is some Cretaceous.  Maybe a heteromorphic ammonite like Glyptoxoceras?  Were there any other associated fossils?  They might help to pin down an age.

 

Don

I wouldn't consider this associated but this was found close by. I could be completely wrong but this looks like a pice from Brachiopod.

Description

 

[Rockwood]

They are foreign to me, but I suspect it could be a rudist. The Cretaceous age would fit.

[Lukas]

I appreciate the help from everyone here. I am very grateful. . 

[Rockwood]

2 hours ago, Lukas said:

I appreciate the help from everyone here. I am very grateful. . 

You can't really give knowledge away. I find that usually I end up accumulating more when I try.