Indiana Mississippian (Valmeyeran) fish

[Sauropod19]

Hello! I just wanted to double check to make sure that my IDs are fairly accurate. These are all roughly the same size (2-3 mm), and I am of the impression that they are Cladodus spp. teeth and cartilage. I found them in southern Indiana’s Mississippian bedrock, and have magnified them 45x for the zoomed in pictures. Thank you!

 

[Collector9658]

Teeth yes, I don't see any cartilage though.

[Sauropod19]

Thank you !

[deutscheben]

The first three are definitely teeth, more likely to be from a palaeoniscoid fish than a shark like Cladodus, based on the clear tip of the tooth. Actinopterygian fish can have this acrodin cap on the teeth. The next two pieces may be scales, also from a fish, while I am uncertain about IDs for the last two pictures. 

[Crinoids]

Very nice! I have pulled some very good helodus teeth from Southern Indiana.