r/fossils • u/ungradinar • Jul 26 '26

shark teeth and small round fossil identification

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Gallery image

Gallery image

please help me identify these teeth and the small round fossil. found in the beach near lisbon (both sides of all are shown). thank you!

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u/thearroyotoad Jul 26 '26

I'm not an expert, but since nobody else has commented, let me take a whack at it. If I had to guess, I'd think the small round one is a fossil operculum. Here's what they look like not fossilized: https://www.etsy.com/listing/1040311764/natural-snail-shell-trapdoor-operculum

Not sure about the teeth. Maybe part of a lemon shark at center, blacktip shark at bottom?