Hadrosaur Metacarpal?

[Jurassic Jim]

Found this bone last summer. Best I can determine it is a hadrosaur metacarpal but looking for some expert opinions. This came from the Judith River formation. If hadrosaur is there anyway to know specifically which one it is.

[Troodon]

I would like to see some other views but I believe its a hadrosaur metacarpal. Unfortunately there are a few species reported from the Judith of Montana. Maybe a paleontologist who specializes in hadrosaurs can shed some light on species.

[Jurassic Jim]

Thanks Troodon. Here are 2 more pics one is a top view and an end-on shot. Quality unfortunately is not great but maybe it will help.

[Opisthotriton]

Yes, it is a hadrosaur metacarpal. If there was more of the skeleton, it *might* be possible to use the ratio of metacarpal length to ulna length, etc to possibly narrow down the genus, but generally speaking, most postcrania are pretty similar among hadrosaurines.

[JustPlainPetrified]

Nice!

[Troodon]

Thanks for the additional pictures and enjoy your find its not everyone that finds bones of hadrosaurs.

[Jurassic Jim]

Thanks for the help. My first thought after finding was probably reptile as the bone had so much curve to it but then ran across pictures of these metacarpals of hadrosaurs. I am definitely appreciative of the rarity of finding and having.