Little claws from Hell Creek

[Dino Dad 81]

Hope everyone has a good weekend coming to them. Any thoughts on these claw pieces?

 

1: Hell Creek formation, South Dakota

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1

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1

 

 

2. Hell Creek formation, Garfield county, Montana

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2

 

 

[Troodon]

Size?

[Troodon]

I think this what you have depending on the size...

 

Pretty sure your second pes claw, belongs to the alvarezsaurid Trierarhunchus prairiensis . 

 

The first one is more problematic since we have no direct comparative material and we are looking at a claw missing the articulation end.  With the exclusion of other known taxons in the HC and looking at some Campanian material I would tentatively say its an indeterminate Dromaeosaurid pes claw.

[Dino Dad 81]

Thanks @Troodon. The first one is about 1 1/8" (maybe 1.5" if complete?). The second is about 7/8" (maybe an inch, if complete?). Please let me know if that helps or if there are any improved/additional pics that would help.

[Troodon]

Good on both