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Layers, layers. Need help to ID


dodo4

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Just now, Tidgy's Dad said:

Yes, i think so too.

It was walking the beach? :crab:Wow! :D

 

Yes, I had to run fast to catch it!

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I agree with Tony - the Schreger Lines are a diagnostic feature of Ivory.

 

 

IMG_0710.thumb.jpg.f62e296a35e55aa912c2e144a25dc594.jpg

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    Tim    -  VETERAN SHALE SPLITTER

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9 hours ago, dodo4 said:

 

Yes, I had to run fast to catch it!

I have one word, looking at your avatar and the object...FETCH!!!!!

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1 minute ago, caldigger said:

I have one word, looking at your avatar and the object...FETCH!!!!!

 

You are reading me well and, I had good helpers. Dachshunds are bred to hunt mammoth and/or mastodon :-)

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Not sure I'm going to buy into that.

Something tells me Mastodons and Mammoths didn't burrow too much. 

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8 hours ago, dodo4 said:

 

You are reading me well and, I had good helpers. Dachshunds are bred to hunt mammoth and/or mastodon :-)

Love my Dachshunds, but the only things they ever dug up needed to stay buried!  

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53 minutes ago, erose said:

Love my Dachshunds, but the only things they ever dug up needed to stay buried!  

 

You are absolutely correct erose, and to confirm that, I am going to post a few pictures just for you!

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I'm pretty sure you were inspired by this recent topic. :)

Your specimen has a part of the dentin revealing the Schreger pattern necessary to diagnose proboscidean tusk.
Try to measure the angle between the Schreger lines (it will be good to have more samples), then see if they are acute or obtuse. Usually the measurments are made near the dentine-cementum junction.
The cementum is a thin layer of the external part of the tusk. In gomphothere tusk the thin cementum layer covers the dentin proximally, but is lost distally by abrasion in life. It's not clear if the cementum overlapped the enamel, also, the enamel is present only in the upper tusks of gomphothere as a continuous band (1-3mm thick) with a width of several centimeters.
As far as I can see, the angles in your specimen are obtuse, so it might be from mastodon or gomphotere.

 

IMG_0710.jpg.5f92ea3d995fc5afb5258d3330ede47a.thumb.jpg.70fb91c72c81656941244948f8afe5c0.jpg

 

The layers in question are the annual/seasonal/weekly/daily increments.

 

 

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" We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. "

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Definitely not pet wood.

" We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. "

Thomas Mann

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I also thought at first sight that this is a piece of coalified wood. But on the third pic, you can see in the lower left corner a relatively fresh break, that is whitish. So no coalified wood. But didn´t recognize it as ivory...

Franz Bernhard

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The Schreger lines seal the deal that it is indeed ivory, and not wood.  ;) 

 

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    Tim    -  VETERAN SHALE SPLITTER

   MOTM.png.61350469b02f439fd4d5d77c2c69da85.png      PaleoPartner.png.30c01982e09b0cc0b7d9d6a7a21f56c6.png.a600039856933851eeea617ca3f2d15f.png     Postmaster1.jpg.900efa599049929531fa81981f028e24.jpg    VFOTM.png.f1b09c78bf88298b009b0da14ef44cf0.png  VFOTM  --- APRIL - 2015  

__________________________________________________
"In every walk with nature one receives far more than he seeks."

John Muir ~ ~ ~ ~   ><))))( *>  About Me      

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Pretty sure that it's ivory.

This is a Florida beach find - not known for fossil wood finds. ;)  

 

 

SchregerLines.jpg

    Tim    -  VETERAN SHALE SPLITTER

   MOTM.png.61350469b02f439fd4d5d77c2c69da85.png      PaleoPartner.png.30c01982e09b0cc0b7d9d6a7a21f56c6.png.a600039856933851eeea617ca3f2d15f.png     Postmaster1.jpg.900efa599049929531fa81981f028e24.jpg    VFOTM.png.f1b09c78bf88298b009b0da14ef44cf0.png  VFOTM  --- APRIL - 2015  

__________________________________________________
"In every walk with nature one receives far more than he seeks."

John Muir ~ ~ ~ ~   ><))))( *>  About Me      

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