Hadrosaur jaw fragments

[bcfossilcollector]

These are two Hadrosaurus jaw fragments I’ve had for awhile. As far as I know they are from the Hell Creek formation of Montana. I think they might be Edmontosaurus but I really can’t tell. The fragment exhibiting tooth channels is about 8 inches in length. The other fragment or chunk exhibits many broken teeth and is about 4 inches in length. @Troodon @jpc might like to have a look?

[Troodon]

The only hadrosaur in the Hell Creek Formation is Edmontosaurus.  Can you provide a locality which supports its from the HC formation? Montana is not an adequate provenance.

[bcfossilcollector]

Unfortunately the old label I received when I acquired these specimens was not specific to a locale. Definitely a deficient provenance if even a provenance it is. Thanks Troodon. 

[LordTrilobite]

While Edmontosaurus is the only described hadrosaur in the Hell Creek formation, there have been reports of possible rare Lambeosaurine material as well.

 

The first fossil is a nice piece of a left dentary.

[bcfossilcollector]

Thank you LordTrilobite!  

[jpc]

8 inches... that is a pretty youthful duck-bill.  

[bcfossilcollector]

I thought the size of the jaw might indicate a juvenile. Thanks jpc!