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Harry Pristis

 

Looks to me like two beasts -- an oreodont skull and a Mesohippus(?) mandible.

 

 

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Macrophyseter

I agree with Harry.

 

Very amazing find!

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goatinformationist

Real eye candy.

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snolly50

As previously stated Oreodont skull and U/K (to me) mandible. They appear to have been varnished, are they from an old collection?   

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Innocentx

:popcorn:

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Harry Pristis

 

As I look at this mandible with fresh eyes, I am much less certain of my suggestion of Mesohippus.  These fossils are not directly related, but I'm uncertain about the origin of the putative mandible. 

 

Oreodonts have deep jaws - does this?  Oreodonts have triangular canines - check (but that's not an exclusive feature).  Oreodonts have selenodont teeth - no check!  Oreodont mandibles have normal, nearer-vertical (~45 degrees) symphysial joints, not extended nearer-horizontal joints.

 

We need better images of the putative mandible.  Is that extended mandibular symphysis really a frontal bone/palate from a skull?

 

All this speculation, remember, is based on 2-dimensional images, and not enough of them.  

 

 

 

oreodont_florida.JPG

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Mike from North Queensland

The oreodont and associated animals of that age is something I have no knowledge of but .

With the angle of the photos not helping, could there be two different skulls and no mandible shown.

When taking photos of fossils think of it as a dice.

 

Mike

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Harry Pristis
3 hours ago, Harry Pristis said:

Is that extended mandibular symphysis really a frontal bone/palate from a skull?

 

1 hour ago, Mike from North Queensland said:

 could there be two different skulls and no mandible shown.[?]

 

That is the question.  More images may answer it.

 

 

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Nobodys55

Here's more pics. Sorry it took so long. Keep in mind that the bottom mandible appears to have been flattened. The teeth on it line up on the one side but not on the other.

IMG_20190108_201426.jpg

IMG_20190108_201411.jpg

IMG_20190108_201449.jpg

IMG_20190108_201154.jpg

IMG_20190108_201252.jpg

IMG_20190108_201226.jpg

IMG_20190108_201136.jpg

IMG_20190108_201115.jpg

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ShoreThing

Wow, very cool!

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Innocentx

Pretty incredible how these pieces mate up yet are possibly not from same creature as @Harry Pristis says.  The one part obviously has the brain case.  :popcorn:More popcorn!

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Harry Pristis

The newer images make the pieces look more like an oreodont.  It appears to be a mandible.  The skull still looks strange.  Maybe the skull is embedded in a rounded chunk of matrix, with the whole thing shellacked.  

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PalaeoArt

This is certainly an Oreodont skull. Mesohippus lower jaws would feature a diastema gap where teeth are missing behind the incisors. Mesohippus teeth also have a ridge on the crowns running along the outside of their molars. This looks to be a fairly large adult oreodont and will either be a Merycoidodon culbertsoni or potentially an Eporeodon major. The defining factor on Eporeodon is the larger and thicker zygomatic arches which are missing as well as slightly different canines. Hope this helps. 

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