Fossil Or Rock? Please Take A Look

[TucsonDesertCollector]

Hi,

I found this in a bag of seashells at an estate sale. I actually bought the bag because of this specimen. I thought it looked very interesting with that perfectly round and smooth hole that runs through it. Is this a rock, a bone, or perhaps coral?

Thank You!!

Edited September 26, 2014 by TucsonDesertCollector

[RichW9090]

The material looks like shell to me. What it is I do not know.

[kauffy]

I agree it looks like a large chunk of shell. It is probable the hole in the shell material is either a result of a burrowing clam, boring sponge or polychaete worm which decided to take up residence on the surface.

That's what I see but let's see what others think

[Auspex]

Cool piece!

To me, it looks like a big, heavy piece of water-worn and sponge-drilled shell.

[caldigger]

Yep, we are all on the same train. Thick shell that has been bored and very water worn.

[mstimson29]

Alien Artifact. ... probably a shell. very cool!