claw or tooth ID please

[rideswithchrist]

I think it was found in Canyon Lake TX- it should be limestone. 

[garyc]

Maybe a shell stuck in limestone? Does not look like a claw to me

[jikohr]

Cool find!

It appears to be the interior mold of an oyster (probably texigryphaea or a close relative).

At least that's my guess.

[LordTrilobite]

Definitely not a claw or tooth. It lacks the necessary surface structure details like grooves on a claw or enamel on a tooth.

[FranzBernhard]

I am wondering, if it might be the internal cast of a rudist:

From Schuhmann & Steuber (1997). Please select one... .

Franz Bernhard

[rideswithchrist]

That is what I was thinking as we searched. The texture also looked very different than the other things we looked up. 

9 hours ago, LordTrilobite said:

Definitely not a claw or tooth. It lacks the necessary surface structure details like grooves on a claw or enamel on a tooth.

 

[Plax]

Anisomyon steinkern? (wild guess)