Ruger9a Posted March 5, 2020 Share Posted March 5, 2020 Can anyone tell me what this is? Link to comment Share on other sites More sharing options...
grandpa Posted March 5, 2020 Share Posted March 5, 2020 Looks like an iron concretion with brach impressions. 1 Link to comment Share on other sites More sharing options...
Ruger9a Posted March 5, 2020 Author Share Posted March 5, 2020 Thanks Grandpa. This fossil is not of a hard matrix. I purchased a bivalve from Brazil that had a large amount of matrix attached, more than necessary for a display. So, I removed some and found this inside the part I removed. Doesn't look or feel like an iron concretion to me, but I may be wrong - again.... Link to comment Share on other sites More sharing options...
Pterygotus Posted March 5, 2020 Share Posted March 5, 2020 I can also see brachiopods inside the rock. Link to comment Share on other sites More sharing options...
Rockwood Posted March 5, 2020 Share Posted March 5, 2020 6 hours ago, Ruger9a said: I purchased a bivalve from Brazil that had a large amount of matrix attached, Trace fossil left by a bivalve which happened to fill with other shell pieces ? 2 Link to comment Share on other sites More sharing options...
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