North Guy

Help To Identify Jaw Bone

15 posts in this topic

Hello. My daughter and I just returned home from our trip to the Holmdel area for some shark tooth hunting and we need your help. We found this jaw bone(s) and have no idea what it is from. It looks like there are tusks, which have broken off, at the the front of the jaw. I'm thinking this the lower jaw and there is an area at the front where these two pieces may have been attached (I tried to show that in the third picture), but that would have made for a very narrow chin. I've added a few pictures so please let me know if you have questions that will help you identify the jaw bone. Thank you

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Rodent, for sure; very like a squirrel, but it seems too large.

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Possibly groundhog.

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Not a fossil though

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Those are Rodent

Im thinking Muskrat or Groundhog, they are too large for Ground Squirrel. I wanted to say Rat or Rabbit but the back teeth sructure is different.

I have one that I collected same shape and everything just different back teeth, mine are leaf shapped and I know that it Rodent. If you want check to see if the replacement teeth are still inside the jaw (ONLY IF YOU ARE COMFTERABLE WITH IT, MINE ALREADY HAD IT ROTTING AWAY DONT RUIN SPECIMENS)

Still nice specimen to learn about the A&P of Rodents.

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very definetly rodent lower jaws. The "tusks" are its incisors... its gnawing teeth. All rodents have them.

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very definetly rodent lower jaws. The "tusks" are its incisors... its gnawing teeth. All rodents have them.

Now do they have replacement incisors in their jawbone?

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Now do they have replacement incisors in their jawbone?

A rodent's incisors grow continuously, throughout their very toothy lives.

Edited by tracer
modified for emphasis

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A rodent's incisors grow continuously, throughout their very toothy lives.

Gotcha!

just thought I had a really odd rodent

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Hey folks,

not sure if anyone is reading this.

I am sorry to say that I have misdiagnoised my last statment about the jaw bone I was compairing to the ones presented. I contacted my local veternarian and got it reconfirmed that it was not traditional rodent but it was either determined to be that of either a possum or a juvinile feline, proably a stray. So once again I am sorry for possibly leading in the wrong way.

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Groundhog or beaver jaw, google images should be able to help you make the final call.

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I believe it might be a Woodchuck aka Groundhog Jawbone. Looks a lot like a squirrel but a little larger and the Molars look to be a dead ringer. By the way, welcome to the Forum.

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Edited by Sharkbyte

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Hey folks,

not sure if anyone is reading this.

I am sorry to say that I have misdiagnoised my last statment about the jaw bone I was compairing to the ones presented. I contacted my local veternarian and got it reconfirmed that it was not traditional rodent but it was either determined to be that of either a possum or a juvinile feline, proably a stray. So once again I am sorry for possibly leading in the wrong way.

Your local vet couldn't tell the different between opossum and feline dentition??? Might want to take your pet to another vet...

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Hahahhaha, vets these days...

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Hey folks,

not sure if anyone is reading this.

I am sorry to say that I have misdiagnoised my last statment about the jaw bone I was compairing to the ones presented. I contacted my local veternarian and got it reconfirmed that it was not traditional rodent but it was either determined to be that of either a possum or a juvinile feline, proably a stray. So once again I am sorry for possibly leading in the wrong way.

Your local vet couldn't tell the different between opossum and feline dentition??? Might want to take your pet to another vet...

Worse than that --That veterinarian can not tell the difference between a felon and a rodent-- Who is chasing Who?

Definitely need a new vet.!

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