Mystery Fossil

Hello Avril,

Please find attached 3 photos of a fossil (I think) I dug up in my yard in North Bexar County Texas. I have dug up at least 15 more of these and think my yard may be an ancient sea bed or river bed. Could you please help me identify them?

Robert Bennett

Send Ideas to: Robert




  • This is a bivalve, just an internal mold or steinkern. Probably Eocene but could be late Cretaceous. By the coiling of the umbones I'd suspect Cardiidae.... Andrew G.

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