New Members Kimb Posted June 25, 2014 New Members Share Posted June 25, 2014 I was wondering if anyone could ID these for me. I believe they might be cretaceous gastropod opercula. I found these along the San Marcos river in central Texas. The largest fossil is approximately 4" x 4.5". Thank you ! Kim Link to comment Share on other sites More sharing options...
Al Dente Posted June 25, 2014 Share Posted June 25, 2014 They look like valves from an oyster, possibly from Exogyra. A view of the other side would help. Link to comment Share on other sites More sharing options...
Fossildude19 Posted June 25, 2014 Share Posted June 25, 2014 Something for scale in the pics as well, please. Regards, Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 IPFOTM -- MAY - 2024 _________________________________________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
Auspex Posted June 25, 2014 Share Posted June 25, 2014 Yup, the smaller "bottom" valve. Our member Kentuckiana Mike has a nice image of this on his blog: LINK 1 "There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant “Try to learn something about everything and everything about something.” - Thomas Henry Huxley >Paleontology is an evolving science. >May your wonders never cease! Link to comment Share on other sites More sharing options...
New Members Kimb Posted June 25, 2014 Author New Members Share Posted June 25, 2014 These are my finds from the same area. Hope these help. Kim Link to comment Share on other sites More sharing options...
BobWill Posted June 25, 2014 Share Posted June 25, 2014 Maybe the internal mold from Exogyra if there's no growth lines on either side. Link to comment Share on other sites More sharing options...
RyanNREMTP Posted June 25, 2014 Share Posted June 25, 2014 Those things are huge. The ones I find are only quarter size. Link to comment Share on other sites More sharing options...
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