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Kikokuryu

While I was sorting through my collection of croc fossils, I came across these Elrhaz Formation teeth I bought 6 months ago and never did figure out what they were. I assume they are croc and not some kind of fish, though I could be wrong. I've never seen these apart from the one source I purchased them from.

 

I've been told they were Sarcosuchus, then Kaprosuchus, then Suchomimus. Pretty sure it's not Sarcosuchus, and the images I can find of Kaprosuchus don't seem to match. Suchomimus, I don't know, but my gut feeling is, no, I've seen dozens of Suchomimus and fake-Sucho crocs, and never found a match.

 

If anyone is familiar with this morphology, any input is appreciated.

 

Locale: Gaoufaoua, Tenere Desert, Niger

 

1348280153_ElhrazCrocFang1.thumb.jpg.be03a74cb3d2ff43b3c3374079d31707.jpg637479201_ElhrazCrocFang2.thumb.jpg.e6bc6c2a4993ced5a52db56a75cb55e8.jpg1178970113_ElhrazCrocFang3.thumb.jpg.6d4c09e83aac07b288c2b130aece3cde.jpg654095007_ElhrazCrocFang4.thumb.jpg.9caacaad614d3f208cba8b9c1a9c2ecc.jpg984106658_ElhrazCrocFang5.jpg.d63d06e00a31af79fb32fc4c33fc3d3c.jpg

 

Last picture is a couple of other crocs from the same lot. One (the robust one on the right) is probably Sarcosuchus.

 

390800128_ElhrazCrocFang6.thumb.jpg.c72b8b6f8c96e295e09f5e9dc9d0371d.jpg

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Suchomimus teeth have a distinct diagnostic characteristic with small marginal serrations (Hendrickx et al. 2019) on their carinae.  I don't see any on your teeth but please reconfirm.

 

Sarco teeth appear to have a smooth crown and all its teeth are pretty stout so they dont seem to fit your gracile vertically striated morph.  Also Kaprosuchus is known from the younger deposits of the Echkar Fm and Sereno's 2009 paper show its teeth with a smooth crown.  

Only 3 species are currently described in the Elrhaz Formation:  Sarco, Araripesuchus and Anatosuchus and the dentition of the latter two do not seem to match.  So not sure what you have if they dont have those serrations.

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13 minutes ago, Troodon said:

So not sure what you have if they dont have those serrations.

Pterosaur teeth?

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55 minutes ago, Runner64 said:

Pterosaur teeth?

Yea thought of that and anything is possible but have not seen that morphology on other North African pterosaurs along with the oval cross-section.

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Kikokuryu
5 hours ago, Troodon said:

I don't see any on your teeth but please reconfirm.

 

I don't believe they do. I've checked both and rotated them around in various angles for a good while under a scope, but I don't see anything. I guess the only good thing is how strange these teeth are and probably belong to something that could one day be identified opposed to generic looking croc teeth.

 

T20210908_002_0034.jpg.920821f8b17c602a679cfc35afe88df5.jpgT20210908_001_0042.jpg.ddf9691962b0d9bb5796beb2b18776ae.jpg

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