ID help please

[Scottnokes2015]

Hello group thank you for your help yesterday with my trilobite.

I'm still working on my database and found these two items.

I know a precise ID is not easy across here but could you give me some though ideas about possible era and the mammal Jaw animal and if possible what crinoid the Calyx is 

Thank you

 

 

 

 

[Rockwood]

6 hours ago, Scottnokes2015 said:

and if possible what crinoid the Calyx is

I think it's the other end. A holdfast.

[Kane]

Please provide location.

[Scottnokes2015]

8 hours ago, Kane said:

Please provide location.

I'm not sure if the location as it was given to me

[Shellseeker]

Take a look at Bos/Bison, and Camel/Llama lower teeth.  This is paleollama mirifica

 

This is Bison

[abyssunder]

 If picture 5 shows the opposite side of specimen in picture 4, it's a calyx. A crinoid holdfast does not have plates that I think I see in picture 5. Pictures with more clarity are needed.