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Big Brook mammal jaw with teeth in it


mattbsharks

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I had a great day today sifting with my mom. We started at Ramanessin but the finds were far and few between so we switched to big brook. I found this in one of my last sifter fulls. It was sitting right on top after I sifted the sand out. I was wondering if this is most like Pleistocene or more modern and what kind of animal it might be. Thanks!

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Looks modern. 

Possibly a muskrat/woodchuck? 

    Tim    VETERAN SHALE SPLITTER

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3 minutes ago, Fossildude19 said:

Looks modern. 

Possibly a muskrat/woodchuck? 

I agree. 

 

Beaver teeth are usually orange/red.

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What makes people say that it is modern? I’m in no way disputing it but I’m curious. It is relatively common for mammal jaws dating back to around the Pleistocene to have complete teeth like this. Is it more of where it was found or the look of it because many fossil jaws look like they would be  modern to me

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1 hour ago, mattbsharks said:

What makes people say that it is modern? I’m in no way disputing it but I’m curious. It is relatively common for mammal jaws dating back to around the Pleistocene to have complete teeth like this. Is it more of where it was found or the look of it because many fossil jaws look like they would be  modern to me

Bones don't take long to turn brown in the brooks there. 

Is it heavy? does it feel like rock?

 

Try the flame test.  I'd wager you will smell burning collagen if you were to hold a flame to a part of the jaw. 

 

    Tim    VETERAN SHALE SPLITTER

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__________________________________________________
"In every walk with nature one receives far more than he seeks."
John Muir ~ ~ ~ ~   ><))))( *>  About Me      

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It would be extremely rare to find a Pleistocene jaw with teeth in it in NJ. Most Pleistocene bones here are a dark black color. The jaw doesn't look like beaver; the teeth would be much more robust. It's probably a modern muskrat jaw.

“You must take your opponent into a deep dark forest where 2+2=5, and the path leading out is only wide enough for one.” ― Mikhail Tal

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I picked it back up and tapped it a few times and I think it’s modern. It was very light and it sounded like bone

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Most definitely modern. It's not unusual to find modern bones like it. They darken quickly. 

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  • 3 weeks later...

Bones take the color faster than the teeth. We see this difference on your mandible.

 

Coco

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