Fossil ID Assistance ll Please

[Paleo_Adventure]

Hello and thank you for your assistance. Can anyone identify this fossil? I found it in SC , Cooper River. Tooth? Horn? Spike?

 

Again, thank you!

[Paleo_Adventure]

Hello, so many views but not feedback. I have asked for years with no response from others and look forward to someone knowing what this is. Thanks.

[Lone Hunter]

I'm going to guess tortoise leg spur,  someone should confirm or correctly ID it hopefully.

[Harry Pristis]

I don't think it's a tortoise spur.  I've not seen a spur with this sort of texture. 

The Cooper River has Pleistocene to Middle Miocene fossils which considerably expand the possibilities.  I don't really have a good guess for you. 

Your mystery find strikes me as very dense -- toothy material or something completely replaced by an exogenous mineral. 

Here are some Florida river wood fragments completely replaced by calcium phosphate:

[Lone Hunter]

I kinda figured it wasn't a spur but a wrong answer usually elicits the correct answer. Usually Looking down at it in first picture it looks more like wood to me now.

[Fossildude19]

Wood replacement seems likely to me.