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Small Mammal's Lower Jaw? Very unique- trying to identify

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Small Mammal's Lower Jaw? Very unique- trying to identify

Postby benchambers » Mon Mar 04, 2013 6:00 am

Found this in the Imperial National Wildlife Refuge in La Paz County, Arizona, USA. It was on a mountainside right next to the Colorado River. I've never seen anything like it and I am hoping someone can identify it for me.
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Postby JackBean » Mon Mar 04, 2013 3:21 pm

is it in one piece or did you assemble it?
http://www.biolib.cz/en/main/

Cis or trans? That's what matters.
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Postby benchambers » Mon Mar 04, 2013 5:14 pm

It is in one piece; I found it as it looks in the photos. It doesn't have any moving parts to it.
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Re: Small Mammal's Lower Jaw? Very unique- trying to identify

Postby benchambers » Mon Mar 04, 2013 7:00 pm

It's about two inches from the front teeth to the back
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Re: Small Mammal's Lower Jaw? Very unique- trying to identify

Postby Grisner » Wed Jun 26, 2013 12:49 am

I will go ahead and make the assertion that there is some serious deformation of the jaw. It's been awhile but I do see what I would call carnassials which would make it a carnivore, assuming that they are carnassials. Incisor count eliminates marsupial so if I had to guess it would be a small fox or cat. I'm not for sure what you have in Arizona but it is just a guess. I am more familiar with skulls found around where I live in Oklahoma.
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Postby vk4vfx » Wed Nov 20, 2013 10:39 am

I think Grisner is right, serious deformation, probably the reason it died as there is no way it could macerate its prey with the teeth laying horizontally to the jawbone.

It died young whatever it was as the teeth are in good condition, I don't think it is a fox I done some quick googling and a foxes jaw bone comes to more of a sharp triangular shape than this specimen.

Not dead that long either as it still has tissue attached tot he jawline, anyway very interesting find it reminds me of a feral pig a friend of mine shot that was hangin around the cattle station where we lived.

This thing would come in and eat the left overs in the bin, it was a skinny sad looking specimen and when he retrieved the carcase it's tusks had grown around back through the jawbone twice! yes, amazing, the poor thing must of been in agony as when the skull was processed it had huge calcium deposits around where the tusk had gone back through the bone, I had never seen anything like it, a real oddity.

Anyway will watch this thread as I am interested to know what this is.
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