Now this is a tooth...

[GibH]

Weird find today. Not sure what it came from, it appears a spiny oyster had a taste for it though.

 

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[GibH]

Ok, not a tooth. It's some kind of shell.

 

[Toecutter]

lol good id

 

[Blak bart]

You have an oyster that has adhered itself to a section of a much larger shell fragment. I forget the name of the oyster but they have an orange hue when freshly dove or found. Yours is ancient and has lost the orange color. Collectors like oddities like this and yours has a good portion of the delicate spines left. I dove some great ones in the 90s at a fishing boat wreck in 90 feet here in the keys. A large portion of the wreck was covered in these oysters. I have to look it up.

 

[Blak bart]

Here ya go.

 

[Blak bart]

Probably Atlantic spiny oyster.

 

[GibH]

Probably Atlantic spiny oyster.

Yeah, I knew what the spiny oyster was, it's the larger shell that's weird.

 

[Professor of Engineering]

Interesting find!

 

[Old Pueblo]

Poseidon's other trident?

 

[randazzo1]

I don’t think it’s a shell attached there. Possibly a concretion or amalgamation of other shell type creatures, but I certainly wouldn’t rule out a mineralized bone. Not a moneymaker, bur def interesting.

 

[JamieD]

The bigger shell is a hammer oyster. Looks like it’s quite common to get them with Spondylus shells attached as there quite a few people selling them, not for a lot unfortunately. One example here:

https://www.ebay.com/itm/SPA2-SPOND...lleus-albus-HAMMER-OYSTER-in-US-/372385916125

 

[GibH]

The bigger shell is a hammer oyster. Looks like it’s quite common to get them with Spondylus shells attached as there quite a few people selling them, not for a lot unfortunately. One example here:

https://www.ebay.com/itm/SPA2-SPOND...lleus-albus-HAMMER-OYSTER-in-US-/372385916125

Good ID. Thanks!

Not too worried about the value, I only paid a couple of bucks for it on a whim.