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White River Bear Dog Skull?

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RCFossils

I have had this interesting skull for many years and was hoping someone might be able to narrow down what it is.

I do not have any collection information as the person who found it is deceased.

I know it is from the White River/ Brule formation.

My best guess is some type of Beardog Daphoneus?

Any help would be appreciated.

0D29F803-8BA9-4AD7-97FA-68FD663CF229.jpeg

EE6BA88D-371C-43F4-A74D-7C534F23C3B5.jpeg

AC7E3985-78E8-4A3D-BB01-07DE61495B94.jpeg

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caterpillar

Hyaenodon?

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ParkerPaleo

Looks like Hyaenodon to me.

 

Hyaenodon crucians (sp?) on top.

 

Daphoenus vetus (Bear Dog) on bottom

 

If you look at the carnassials, you will notice Hyaenodon has a very flat bladed shearing tooth, and actually uses multiple teeth (M1-M2) in a row to make a very large shearing surface.  The bear dog on the other hand, has a triangluar carnassial (P4) followed by 3 crushing teeth (M1-M3) after.

 

Let me know if better pictures are needed.

DSC00419.JPG

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mikeymig

Looks like Daphoenus to me. Ive had both a complete Bear Dog and Hyaenodon skulls in my collection and have handled others but Im far from an expert. This skull is slender with smaller teeth when compared to a creodont. 

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Ruger9a
13 hours ago, RCFossils said:

I have had this interesting skull for many years and was hoping someone might be able to narrow down what it is.

I do not have any collection information as the person who found it is deceased.

I know it is from the White River/ Brule formation.

My best guess is some type of Beardog Daphoneus?

Any help would be appreciated.

 

 

 

Nice skull.  Any chance we can get some closeup photos of the good teeth?

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caterpillar

I confirm Hyaenodon. The molars are carateristics

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RCFossils

Thanks for the input.

Here are a few more images.

5A6CB2CD-533D-48CD-ABF6-6158DCE1CFFC.jpeg

8A043FA9-611D-451A-BD2F-271C11BA85A6.jpeg

220818E5-38B9-42A3-8D96-30042035563D.jpeg

DF67CC80-E47C-48EA-9A69-022D732E2B91.jpeg

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jpc

Not Dapheonus... see PaleoParker's post.  He nailed it.

 

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RCFossils

Thanks

Is there any way to narrow it down to the species level?

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jpc

species of Hyaenodon are basiclly bsed on size.  This one is not huge, I would guess H. montanus.  This is only a guess. 

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Ruger9a
5 hours ago, RCFossils said:

Thanks for the input.

Here are a few more images.

 

 

 

 

Thanks.  I'm with JPC.

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RCFossils

Thanks

I will label this one Hyaenodon sp.

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