ID help- possible turtle carapace? Found on Caspersen Beach, Florida

[LJB]

Hello! I’m new here, but I was hoping someone would be able to help me identify this fossil I found a few months ago? I believe it is a turtle carapace or something similar. Any help would be greatly appreciated. Thanks

[val horn]

I think so

[Megalodoodle]

2 hours ago, LJB said:

Hello! I’m new here, but I was hoping someone would be able to help me identify this fossil I found a few months ago? I believe it is a turtle carapace or something similar. Any help would be greatly appreciated. Thanks

Can someone confirm that it is the Peace River Fm.?

Edited October 5, 2021 by Megalodoodle

[Megalodoodle]

Yes, it is most likely a turtle shell because of the patterning. (The part that looks like cracked mud.) Can someone confirm whether this belongs to the outside edge of the plastron? And if I’m wrong be willing to explain to me why I am incorrect? Although, I did not throughly research this as I should have. Consider this a hunch. Hopefully someone else will be along soon to give you more detailed information.

[Coco]

Hi,

 

It may be a piece of turtle shell, but we need clearer photos. Take your photos in daylight and adjust sharpness.

 

Don't use coins, they aren't a good indication of measurement, only americaisn know its size !

In addition to the origin and age of the terrain in which the fossils are found, size is also important for proper identification. I invite you to read my last link in my signature. If you don’t have a rule, print the document I made available and put your fossils on it before making your photos, making sure to leave a box with the apparent size (pedagogical message)

 

Coco

[pachy-pleuro-whatnot-odon]

Interesting piece... Definitely bone, but hard to say what kind. I haven't ever seen turtle carapace with this zigzag cross-hatching on the outside surface as mostly, I believe, the outside would be smooth. Now I'm not a turtle expert by far, but to me it looks like a bit of a long bone of some kind, possibly with some tree roots etched into it??

 

Both @Shellseeker and @Harry Pristis are much more familiar with local material, however, so may be they can drop by with an opinion. You'll likely need better quality photographs, though...

[Fossildude19]

Cropped, rotated, and brightened:

 

 

[Harry Pristis]

If I had found these on the beach, I would think of them as bits of giant tortoise shell.

[JohnJ]

The pattern seems strange for turtle or tortoise.

[Auspex]

21 minutes ago, JohnJ said:

The pattern seems strange for turtle or tortoise.

Could those be random crazing of eroded cracks? I'm in no position to judge whether it is or is not turtle/tortoise shell, but the pattern is, imo, a red herring.

[Shellseeker]

I am with Chas and Harry,

The 1st photo (from Fossildude ) above screams turtle or tortoise shell from the underside..Then on the other side,  there is this highly unusual pattern of grooves and cracks that I myself have never seen on a piece of turtle shell OR fossil bone from the Peace River formation.  Maybe a Mammoth stepped on it,   maybe it lay out in blazing sun followed by cool rains for 2 or 3 million years.  I do not know.

 

For my money, tortoise shell

[LJB]

Thank you, everyone, for the input. Sorry about the photo quality, I’ll make sure to get better lighting next time! Also, thanks for the size reference advice. 
 

thanks again :)

 

LJ