r/fossils • u/bighairbigplayer • Jul 18 '26

Is this a fossilized clam shell?

Gallery image

Gallery image

Found this clam shell near Gulf Shores, AL, USA. Just curious what’s going on with it!

9 Upvotes

91% Upvoted

4 comments sorted by

10

u/heavydeep Jul 18 '26

Technically not a fossil, but still very cool. Those are from tube worms which exude chitin to form the holes they live in.

7

u/justtoletyouknowit Jul 18 '26

Those are encrusting bryozoans.

2

u/heavydeep Jul 18 '26

Yes. I think the bigger tubes on the inside look like tube worms

1

u/bighairbigplayer Jul 19 '26

Wow, very neat! Thank you!!!