What's inside this oyster?

[Lone Hunter]

This came from part of creek with Eagle Ford and QAL mix. I have no idea what I'm looking at other than it's not part of an oyster (some is). Thought it was ironstone but now not so sure. Has a couple of interesting little things and the obvious triangle shaped object which I'm really curious about. Thanks for looking and appreciate any input!

[Al Dente]

You are looking at the sediment that filled the oyster shell. There are the impressions of other shells in the sediment. Oysters are made of calcite which is more resistant to weathering than most other clam and snail shells that are made of aragonite. The aragonite shells in this sediment have dissolved away.

[Rockwood]

Shelly muck. I see one shell that I would recognize as a clam (bivalve).

[Lone Hunter]

What is the small round thing in the 8th picture and the triangle shaped thing?

[Rockwood]

30 minutes ago, Lone Hunter said:

What is the small round thing in the 8th picture and the triangle shaped thing?

[fifbrindacier]

29 minutes ago, Lone Hunter said:

What is the small round thing in the 8th picture and the triangle shaped thing?

I think it might be a tooth, there's shark teeth in Eagle ford 

 

[Lone Hunter]

Thanks everybody!  I have some shark fossils but which one looks like a tooth?   Can't believe Rockwood doesn't have an answer this time!

[fifbrindacier]

22 hours ago, Lone Hunter said:

Thanks everybody!  I have some shark fossils but which one looks like a tooth?   Can't believe Rockwood doesn't have an answer this time!

The round and shiny item i circled in yellow. Though, it's just a supposition, wait for more knowledgeable ones.

Edited April 11, 2021 by fifbrindacier

[Lone Hunter]

I was wondering what that was, wouldn't have guessed tooth though.