New Members GeoDancer Posted February 28, 2020 New Members Share Posted February 28, 2020 Hello fellow rock hounds, I recently found what looks to me like fish scales in this shale from Contra Costa County, CA. The shale is from the Kreyenhagen Formation of middle Eocene age. Can anyone confirm this is indeed a fish scale? Thanks! Then first picture is actual size while the second is taken from 30x magnification under the microscope. Link to comment Share on other sites More sharing options...
Al Dente Posted February 28, 2020 Share Posted February 28, 2020 Looks like one to me. Link to comment Share on other sites More sharing options...
New Members GeoDancer Posted February 28, 2020 Author New Members Share Posted February 28, 2020 Thanks for confirming Al Dente! Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted February 28, 2020 Share Posted February 28, 2020 I think so too. Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
Mark Kmiecik Posted February 29, 2020 Share Posted February 29, 2020 I'm looking at it and it seems too almost perfectly circular. The center of the concentric ridges is at the exact center of it. Something about this bothers me. Mark. Fossil hunting is easy -- they don't run away when you shoot at them! Link to comment Share on other sites More sharing options...
Al Dente Posted February 29, 2020 Share Posted February 29, 2020 13 minutes ago, Mark Kmiecik said: I'm looking at it and it seems too almost perfectly circular. The center of the concentric ridges is at the exact center of it. Something about this bothers me. Here are a couple examples from the internet. 2 Link to comment Share on other sites More sharing options...
Mark Kmiecik Posted February 29, 2020 Share Posted February 29, 2020 6 minutes ago, Al Dente said: Here are a couple examples from the internet. Yes, and none of them are perfect circles and none are perfectly centered. So, you agree with me? I get more of an operculum vibe from it. Mark. Fossil hunting is easy -- they don't run away when you shoot at them! Link to comment Share on other sites More sharing options...
Al Dente Posted February 29, 2020 Share Posted February 29, 2020 15 minutes ago, Mark Kmiecik said: Yes, and none of them are perfect circles and none are perfectly centered. So, you agree with me? I get more of an operculum vibe from it. I’m confident it is a scale. I’m not seeing perfect circles. Link to comment Share on other sites More sharing options...
Spoons Posted February 29, 2020 Share Posted February 29, 2020 1 hour ago, Al Dente said: I’m confident it is a scale. I’m not seeing perfect circles. +1, I am seeing a rhomboidal shape with rounded corners. Link to comment Share on other sites More sharing options...
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