Ctenoptychius apicalis.

That's one I never heard of before, Sam. 

Very cool.  

Now that is a beauty!

It might be this genus was synonymized with Ageleodus.

Thanks guys

Petalodonts are my favorite teeth and Ive been after this species for a long time so was delighted to find this! This one is just 3mm x 3mm but specimens have been found in the west of Scotland over 15mm acrosss, this is the first Ive seen in over two years hunting at this site so it might take a while but finding a big one is my main ambition now lol!

Carboniferous fish,yay !! 

Good find,Archie.

Thanks doushantuo