Fossil ID Please

[Man]

Found this in a river washout yesterday while fossil hunting. Initial google search looks like it may be turtle shell?? Am I close?

[RangerRick2012]

Sponge...

[sector42]

Maybe coral? I'm not really good with fossils though.

[Flint knapper]

Take it to your local University and ask an expert.

[Cropduster]

The pic looks as if it could be palm wood.

[SaltwaterSlick]

Pull tab off a prehistoric beer can...

[Man]

bummer...sure looked close to this picture of a turtle shell online for sale at the texas rock shop.

[Tx_Wader]

Fossilized coral.

[Slick8]

Before opening this...MIL came to mind but after opening, I'm unsure.....

[Man]

One last bump for a positive ID

[Matteo]

Looks like a piece of turtle shell bone but does not look mineralized.

[Bilbo]

Fossil ID Please

Cnidaria (aka coral). Pennsylvanian in age I'd say. Roughly 300 million years old

[Fishndude]

Burnadell