Niger Theropod (+Fish) ID

[Kikokuryu]

I recently purchased Niger fossils, and as expected, provenance was poor. I know it's ill-advised to buy fossils without good provenance, but I decided to take a gamble here. There was a sliver of hope in getting provenance as the seller could contact their source in Niger, but alas, outside Agadez is the best they got.

 

The first fossil was sold as possible Kryptops, and 2nd just Theropod. I also got fish fossils from the same group.

 

Elrhaz, Irhazer II, and Tiouraren appear to be the 3 formations in that region, and most fossils from Niger you often see for sale are supposedly from one of the 3. Not 100% sure if there are other formations to consider in the Agadez area.

I know the white-ish fossils are typically the fossils attributed to the Tiouraren fm., but I don't think the darker or even solid black colored fossils are necessarily excluded.

 

If Theropoda indet. is the best ID, that's fine. They're also not complete which is already bad in of itself. 9/10 times fossils from Niger have poor provenance, or none at all, so it's just on par for course.

 

Tooth A - I think the denticle shape and density is wrong, and it might to be too big to be Kryptops.
Distal Serration: 11/5mm
Mesial Serration: 11/5mm

Tooth B - Serrations appear to be worn under a scope.
Distal Serration: 10/5mm Towards Tip - 11/5mm Towards Base
Mesial Serration: 10-11/5mm

Fish - Not really expecting ID from fish chunks. But maybe something about them might give away age . . . probably not.

 

The group of specimens here are stuff I didn't buy, but belong to the same group. I saved pictures of all of them to possibly narrow down a formation or locale, though I'm assuming the diggers in Niger just pile up all their findings into one pot regardless of where they dug them up similar to the stuff from the Atlas Mountains in Morocco. I think the sauropods suggest Jurassic, but again, everything could have been piled up in one lot.

Edited June 5, 2021 by Kikokuryu

[Troodon]

Irhazer Shale has jurassic dinosaur material that comes to market and that's in the Agadez region. You first tooth is not a Kryptops serration shape, undulations point to others.  Could be a meglosaurid or Carcharodontosaurid but without seeing the mesial edge and no provenance impossible to determine.   It's an indeterminate theropod.  Same for you second tooth its just a partial tooth but the mesial edge seems to end, it's robust so on that one which might point to it being a meglosaurid.

[Kikokuryu]

1 hour ago, Troodon said:

Could be a meglosaurid or Carcharodontosaurid but without seeing the mesial edge and no provenance impossible to determine.   It's an indeterminate theropod.  Same for you second tooth its just a partial tooth but the mesial edge seems to end, it's robust so on that one which might point to it being a meglosaurid.

Thank you @Troodon

Regarding the mesial edge, is that to see where it ends? Obviously the 1st tooth is just the tip and missing a good chunk off of the side so nothing I can do there; the 2nd tooth, it's hard to tell, but it does seem to end, though there might be remnants of faint serrations. It's hard to see just looking at it with my eyes, but it certain lighting angles and in photos it's a bit easier to see. Unless you mean the photos don't capture the mesial side.

 

Though provenance is still bad so it probably doesn't change a whole lot.

 

Tooth A

Tooth B

[Troodon]

You are looking at the tooth, in the photos it  appear to end before the base so you have a much better view.  We also don't know how much further the tooth extends down on that outer edge since the base is missing.