Associated Upper Cretaceous Oviraptorid Phalanges?

[Kikokuryu]

I purchased these as Ingenia yanshini which I think became Ajancingenia, which then became and is currently Heyuannia. The formation provided is the Djadochta Formation, but that doesn't seem right since Ingenia/Heyuannia is not found there as far as I've checked. Unfortunately, there isn't provenance other than Mongolia attached to them to say whether they come from the Barun Goyot Formation where Heyuannia yanshini is found.

 

While I'm not necessarily doubting the original ID, I just don't really know. I'm not expecting a positive or diagnostic ID to the genus level, but I wanted to at least know whether or not I can label this to Oviraptoridae indet., possibly Heyuanniinae indet. The original ID is a bit of an odd one, but it might have just been one of the few oviraptorids described at the time. Last I checked, there are now tons of recently described oviraptorid genera in Mongolia and China.

 

The pair of phalanges with supposedly the semilunate carpal attached which I think is the smaller section? I know one of them did have glue in-between them when I lightly smeared it with acetone using a cotton swab. They are associated coming from the same sandstone block, apparently along with other shattered phalanges. Although I don't know if these actually came from the same animal since one looks ever so slightly larger.

 

 

There is some sort of clump of sand or crystalized piece attached, as well as light beige or cream colored matrix. Not sure if that narrows down a formation, probably not, but I do see a lot of matrix from Mongolia tend to be red-ish color similar to the Kem Kem Beds.

 

 

Any input is appreciated. There's probably a lesson to be learned here . . .

[dinosaur man]

I’m not an expert but they don’t really look like Oviraptorid to me, however @Troodon will probably know.

[Troodon]

Agree, these are definitely not Oviraptorid phalanges, in fact and unfortunately they are not dinosaurian.  Most likely from some cenozoic mammal.   The bone preservation is very typical of Mongolia and China

 

An Oviraptorid phalanx should look like other theropod ones with a deep ligaments pits on either side of the distal end.

Sorry paper is paywalled but here a view Oviraptorid foot bones from Mongolia.  Best I can do with the image.

 

 

Funston, G. F.; Mendonca, S. E.; Currie, P. J.; Barsbold, R. (2017). "Oviraptorosaur anatomy, diversity and ecology in the Nemegt Basin". Palaeogeography, Palaeoclimatology, Palaeoecology. doi:10.1016/j.palaeo.2017.10.023

 

[Kikokuryu]

55 minutes ago, Troodon said:

Agree, these are definitely not Oviraptorid phalanges, in fact and unfortunately they are not dinosaurian.  Most likely from some cenozoic mammal.   The bone preservation is very typical of Mongolia and China

Oh well, that explains why I wasn't getting anything. Fortunately it wasn't a huge loss and something to take note of for the future. But, I guess now I can start looking into Cenozoic formations.

 

Thank you.

Edited September 1, 2021 by Kikokuryu