What kind of thresher? - Peace River

[Meganeura]

So - saw the newly resurrected Alopias Grandis thread, and looking through I found the Elasmo guide. Anyway - one of my threshers, that I had labeled A. latidens - doesn’t quite seem to fit latidens. So… is it latidens? Grandis? P. benedini? It’s got a much more curved crown, and a very slightly different root. It measures 18mm in slant height.@hemipristis @Al Dente

 

So here it is on the bottom - my other threshers are on top and look quite different:

 

And pics of just it:

[Al Dente]

8 hours ago, Meganeura said:

So here it is on the bottom - my other threshers are on top and look quite different:

I’m guessing all the teeth in your hand are the same species. There is a lot of tooth shape variation within a species for Alopias, including gender differences.

[hemipristis]

I would posit A. latidens, maybe further back in the jaw? I'm not getting an A. grandis vibe.   Definitely genus Alopias (vs Paratodus)

Edited March 25, 2023 by hemipristis