Permian Teeth ID Help

[historianmichael]

Back in April I visited a well-known Permian site in Oklahoma in hopes to adding to a tiny collection of Permian vertebrate micro fossils I picked out of a bag of "red bed" matrix I purchased a few years ago from a site in Texas. These sites are Early Permian in age and contain tons of tiny bone fragments of amphibians and reptiles, as well as shark and fish remains. I was hoping to get some help identifying/confirming identifications for some of tiny teeth that I collected from the site. Any help would be greatly appreciated!

 

#1- ???- 1.6cm- someone before told me xenacanthid, but the lack of serrations and the fact it is pitted makes me question that identification 

 

#2- ???- 9mm

 

 

#3- ???- 1.3cm

  

 

#4- Ophiacodon uniformis?- 1cm

 

 

#5- Ophiacodon uniformis?- 1.2cm