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Howdy all, I'm interested in this Afrovenator abakensis tooth and am curious if it's legit. It was found in the Middle Jurassic Irhazer Shale of Agadez, Niger and is 1.3" long.
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Hi everyone! I have my eye on a really nice tooth from the Jurassic of Niger but before I get it I figured I'd ask for an outside opinion on it's ID. The seller says it's a Sauropod from the Irhazer formation of Niger and measures 2 inches long and .9 inches wide. Is he correct? Can it be narrowed down any further than that? Any insight would be greatly appreciated as always!
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This is a sauropod tooth from Irhazer formation, Niger. It measures almost 2 inches from tip to base, and the widest part measures 0.9 inches. The seller mentioned this tooth may be a Jobaria, but there is no Jobaria have been described from the Irhazer formation. The Irhazer formation underlies the Tioraren formation where Jobaria was reported. The only spoon-shaped teeth sauropod known from the Irhazer formation is Spinophorosaurus, but the teeth has no serration on it. According to the paper 'Sauropod Tooth Morphotypes from the Upper Jurassic of the Lusitanian Basin (Portugal)' , the tooth looks very similar to the compressed-cone chisel tooth, which attributed to macronarian or basal titanosauriforms. http://novataxa.blogspot.com/2017/03/sauropod-teeth-jurassic-portugal.html base of the tooth
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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.