Not sure what these are

[Deuces]

I went out exploring for possible fossils, and found a lot of what appear to be teeth, vertebrae, and assorted bones. Any further help with identification of these interesting artifacts would be greatly appreciated as I'm new to this fascinating field. 

[Kane]

Where were these found? These look human made to me... 

[ynot]

Welcome to TFF!

All of Your pictures show the same side.

Can You post pictures of the sides and back?

[Deuces]

I found these in a dried river bed.  This is the other side.

[Kane]

I meant where in terms of state and county. This assists us in being able to pin down a geologic age.  

 

How would you describe the material? Is it metallic? Rubbery? Like stone? 

[caldigger]

They look like blades for a hand plainer that has seen better days.

[Deuces]

Grapevine, Tarrant County, Texas.  Stone or possible bone, not metal 

Edited September 23, 2017 by Deuces

[caldigger]

Armadillo armour?

[Deuces]

Both have almost identical holes on the side, serrated at the bottom, and on the smoother side there are several divets that are the same on both of the pieces. I'm puzzled. Thanks for the feedback, TFF!

 

Edited September 23, 2017 by Deuces
Clarification of where divets are.

[Deuces]

Possible Armadillo Scutes.  Thanks Caldigger

[Harry Pristis]

For comparison:

 

 

[Deuces]

Wow thanks 

[Harry Pristis]

19 hours ago, Harry Pristis said:

For comparison:

 

 

I should have identified these further . . .  The larger examples are from Dasypus bellus, the "beautiful armadillo" of the Florida Pleistocene.  The smaller examples (top left and far right) are from the extant species, Dasypus novemcinctus.