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Small Mammal teeth, Shark vert


Shellseeker

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I was hunting in a lot of smaller gravel (almost Pea gravel) and thus found many smaller fossils.. Here are 3 of the one I was unsure of the identity. All suggestions and comments appreciated.  Jack

Fossil #1 Mammal tooth

IMG_0579smtooth.jpg.fb5d2bdbdf8b13b3bd08808d71c83329.jpgIMG_0580.jpg.a92b52ef222a2cb20842092ee35f789e.jpgIMG_0581.jpg.f327f939309e3d3c68c2bd01c8820fd6.jpg

Fossil #2 Mammal Incisor

IMG_0601.thumb.jpg.d078fde0751594483c7f4f7d690a4fd3.jpgIMG_0603.jpg.6612852d211aa74f1eb945e70c27bd36.jpgIMG_0604.jpg.0d4a14264277ce8d81321712db599065.jpg

Finally #3 a shark vert...

IMG_0609sharkVert.jpg.78ea0e2812f126aab40547ac7d1b1a15.jpgIMG_0610.jpg.d7ff6a34dcc68a0e0e7a1ee6962259b6.jpgIMG_0611.jpg.a1d0736abf50713f89b93915290ccc94.jpgIMG_0612.jpg.c7572e09df509a64697ea72eb06bbc9c.jpg

The White Queen  ".... in her youth she could believe "six impossible things before breakfast"

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Agree with Pristus on 1 & 2.

 

 

As for the shark vert, it is nearly impossible to assign a species to it as species holotypes for shark skeletons of the Neogene are exceptionally rare due to the lack of cartilaginous skeleton representation in the fossil record, as cartilage is rarely fossilized compared to true bones and teeth. I'm afraid you're outta luck for IDing this guy beyond shark vert.

Every single fossil you see is a miracle set in stone, and should be treated as such.

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The Calvert Marine Museum has a lot of shark verts labeled to species, not sure if they were guessing? They had all the small ones labeled Carcharhinus sp. maybe just because they are a common shark species. Megalodons, angustidens and Otodus are easy because they are huge and rhincodon (basking) is easy because they have concave faces and a hole in the middle. 

“...whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been and are being evolved.” ~ Charles Darwin

Happy hunting,

Mason

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11 hours ago, MeargleSchmeargl said:

shark skeletons of the Neogene are exceptionally rare due to the lack of cartilaginous skeleton representation in the fossil record, as cartilage is rarely fossilized compared to true bones and teeth.

Shark centra are calcified so are frequently found in marine deposits where shark teeth are found. They might seem rare compared to teeth but you need to consider that a shark can lose up to 20,000 teeth in a lifetime but only has several dozen centra.

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On 2/10/2018 at 2:46 PM, Harry Pristis said:

 

For comparison:

 

 

deer_premolars.JPG

shark_vertebrae.JPG

Harry,

You say volumes with photos,  and make me think, which I believe is your intention. I was thinking llama or bison premolar but knew it was too small... so learned something there... and

Frankly, I was not familiar with sharks in the Lamnoid type OR scyliorhinoid type... so I looked at FLMNH finding this...

Lamnidae.JPG.7c2fef0dcd3c3add3cb33f27f78a45de.JPGCatsharks.JPG.d0b505d1d0a422a2b46d24f2686686b7.JPG

 

Thanks,  jack

The White Queen  ".... in her youth she could believe "six impossible things before breakfast"

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