jbenn57 Posted November 29, 2021 Share Posted November 29, 2021 I think one of these pieces may be a porpoise or dolphin periodic ear bone, but I am totally clueless as to what the other two pieces are as I could not find any comparison. I found all of these at the Purse state park in Charles County Md. Part of the Potomac River formation if I'm not misidentifying. I would love some feedback on whether I have any thing interesting, and whether my assertions about the periodic bone are correct. Link to comment Share on other sites More sharing options...
R0b Posted November 29, 2021 Share Posted November 29, 2021 The second part of a bivalve, the third could be part of a sanddollar. Not sure if the last two are fossilised. 2 Link to comment Share on other sites More sharing options...
jbenn57 Posted November 29, 2021 Author Share Posted November 29, 2021 Any thoughts on whether I have a periodic bone with the first piece? Link to comment Share on other sites More sharing options...
R0b Posted November 29, 2021 Share Posted November 29, 2021 6 minutes ago, jbenn57 said: Any thoughts on whether I have a periodic bone with the first piece? No clue to be honest. Distinguishing bone from something like an ironstone concretion is beyond my knowledge. Link to comment Share on other sites More sharing options...
Carl Posted November 29, 2021 Share Posted November 29, 2021 58 minutes ago, jbenn57 said: Any thoughts on whether I have a periodic bone with the first piece? Sorry: not a periotic bone. It's looks like an ironstone concretion. 2 Link to comment Share on other sites More sharing options...
jbenn57 Posted November 29, 2021 Author Share Posted November 29, 2021 Ok. Thanks for the help! Link to comment Share on other sites More sharing options...
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