Theropod bone?

[Fullux]

Hi all! This is a piece of fossilized bone from the Cloverly Formation of Montana. I thought that the structure of the trabecular bone looked very similar to that of theropod bones but needed a second, third, fourth, or how ever many more opinions. Thanks!

 

(Theropod bone cross section for reference)

[Troodon]

The image you are showing for comparative illustration its that of a Baryonychine which has a very different bone structure than most other theropods found in North America, much more dense. 

Theropod bones are typically hollow and thinwalled.  Vertebrae typically show some degree of pneumaticity in their bone structure.

If this is the Cloverly you also have to consider Sauropod bones that also can have bones with pneumaticity.

 

Do you have a specific locality that this bone came from other than Montana or Wyoming that have Jurassic to Late Cretaceous deposits.

 

The same publication you obtained your image had this one next to the one you presented of a Crocodyliform

 

 

Dorsal rib histology of dinosaurs and a crocodylomorph fromwestern Portugal: Skeletochronological implications on age determination and life history traits.

Waskow et al (2017)

[Fullux]

It was from an Early Cretaceous site.

[Troodon]

Unfortunately thats  not a provenance that we can do much with.

[Fullux]

19 minutes ago, Troodon said:

The image you are showing for comparative illustration its that of a Baryonychine which has a very different bone structure than most other theropods found in North America, much more dense. 

Theropod bones are typically hollow and thinwalled.  Vertebrae typically show some degree of pneumaticity in their bone structure.

If this is the Cloverly you also have to consider Sauropod bones that also can have bones with pneumaticity.

 

Do you have a specific locality that this bone came from other than Montana or Wyoming that have Jurassic to Late Cretaceous deposits.

 

The same publication you obtained your image had this one next to the one you presented of a Crocodyliform

 

 

Dorsal rib histology of dinosaurs and a crocodylomorph fromwestern Portugal: Skeletochronological implications on age determination and life history traits.

Waskow et al (2017)

The seller told me that they had compared it to an Acrocanthosaurus scapula that they had in their collection but I asked for pictures of the scapula, to which they told me that they were unable to provide any.

[Fullux]

2 minutes ago, Troodon said:

Unfortunately thats  not a provenance that we can do much with.

I see

[Troodon]

It might be what you think but we have to deal with the information provided.   The bone being a fragment does not help.

[Fullux]

3 minutes ago, Troodon said:

It might be what you think but we have to deal with the information provided.   The bone being a fragment does not help.

Yes, I understand, thank you for your help!

[Fullux]

Kind of beating a dead horse at this point, but I compared it with the trabecular structure of sauropod bones, specifically diplodocus and found that they looked quite similar. I also compared the piece I have with some diplodocus bones from the morrison of Wyoming and found that the color of the bone itself was very similar too.

[Fossildude19]

I think Chunk-o-saur is about as good as you are going to get here. 

[Fullux]

4 hours ago, Fossildude19 said:

I think Chunk-o-saur is about as good as you are going to get here. 

Yeah, I was afraid of that. Oh well, still some really nice bone chunks.

[jpc]

I'm all in for chunkosaurus