Any help on ID-ing these?

[erikajoan212]

I have these finds from a pack of gravel I bought online. They're from (northern I believe) Florida and the Miocene era. 

Tried to take the clearest photos I could and different angles. sorry for so many photos. 

Here's what I think so far:

1) a jaw of some kind

2) horse tooth? Camel tooth?
3) wondering if any of these are teeth? or just super smooth oblong pebbles

4) no idea? mouth plate?
5) verts?

6) bone?
7) bone?

8) no idea

9) wondering if these are parts of osteoderm plates?

10) bone?

11) no idea

12) Stingray barb?

13) Stingray Barbs?

[Fin Lover]

4 is a burrfish/porcupine fish mouth plate.

13 are pieces of ray mouth plates.

3 just look like pebbles to me.

 

Edited Sunday at 07:37 PM by Fin Lover