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Mike from North Queensland

Small Jaw

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DatFossilBoy

Fish jaw methinks.

Other people might be able to ID the specie.

Regards

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ynot

My first thought is reptile (lizard or snake), but could be fish.

Maybe @old bones can help.

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Wolf89

I agree with lizard 

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KimTexan

Cool find. 

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Innocentx

Awesome!

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old bones

Sorry I'm late to the party... thanks @ynot. I think it looks like a partial lizard jaw as well. :)

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Tidgy's Dad

Nice find! :)

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jpc

The bone quality looks more fishy than lizardy from here.  And the teeth seem to be perched on the edge pf the jaw (see marco's comments, although varanid teeth sit on the top edge of the jaw as well.)  I think this is fish.  

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Mike from North Queensland

Thanks all for the input particularly Marco Sr and Christian for the added information.

On 25/01/2019 at 12:12 AM, MarcoSr said:

ledge and the teeth running up the inside of the jaw.

The specimen does not appear to have a ledge on the inside of the specimen so most likely not lizard.

Tried to get better photos with limited success.

The teeth seem to sit within a groove in the bone section and from the shape of the bone I suspect is part of the upper dentition.

With my USB microscope I cant get a sharp enough focus on the teeth but the front three and second from other end look to be tapered similar to the lizard ones in Marco Sr post.

With the amount and position of teeth with the crowns tapered I suspect this is a functional adaptation.

The rest are broken and it appears they were hollow as I can see evidence of crystal infilling.

This one I will have to get someone to look at.

 

Mike

aa fish 2.jpg

aa fish 3.jpg

aa fish1.jpg

aa fish 4.jpg

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MarcoSr
4 hours ago, Mike from North Queensland said:

This one I will have to get someone to look at.

 

Mike

 

Mike

 

It is always best to have an expert look at a specimen.  They may see a definitive feature right away that we wouldn't even notice.  I'm lucky, because I donate a good amount of specimens and often deal with shark, bony fish, reptile, amphibian, bird, and mammal researchers, I know a good number of experts that I can send pictures to for a quick id.  If it is a specimen of scientific value, I then donate it.  This is good in that I usually get a quick ID.  But I would probably learn a lot more if I did more research myself on the internet and read more papers and books.  However I prefer spending my time finding the specimens, than researching them.

 

Marco Sr.

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