Fish or amphib fossil?

[Jturk76]

Found this today. It was attached to a piece of limestone. It's awfully symmetrical, about 9"x9" and the underside is concave. It appears similar to concrete. Is someone messing with me? Any help identifying this is much appreciated.

 

[Indian Steve]

It looks like a sand dollar.

 

[bone2stone]

Well it certainly has some affinities to an echinoid, but 9" gotta go with a different guess.
It is not a sea urchin [echinoid]
There are definite inclusions within the stone.
Need some more information, locality and if you know, strata age. Upper/Lower Cretaceous, Devonian, Permian?

Found in stream?, Mountain side? We just need more information.
This has peaked my interest.

Bone2stone

 

[Jturk76]

Thank you for responding. The item was found in Central Texas, lower Cretaceous I believe. Several different types of marine fossils can be found on the property from oysters, cephalopod, corals, tube worms, etc. but this is the only thing like this I have found. The property is one big hill, with considerable elevation changes. I will do my best to answer any additional questions.

 

[Jturk76]

Hello Forum, any feedback on this specimen is appreciated. I will be taking several items to the University of Texas ID day but that's not until 9/17. The less rocks I have to carry the better! Please don't hesitate to shoot me any questions. I will also try to post more photos later. Thank you.