Kolya Posted July 2, 2022 Share Posted July 2, 2022 Hello! Is it possible to identify this scale? May be to order, or family, or genus? Max size: ~ 0,5 mm. There is some relief on the sides of denticle (see arrow). Age: Eocene (Ypresian or Lutetian). Location: Ukraine. Thanks in advance! Link to comment Share on other sites More sharing options...
abyssunder Posted July 2, 2022 Share Posted July 2, 2022 I'm not sure what you have there, dermal denticle or fish scale, but I think the arrowed area may indicate bryozoan encrustation. It's hard to see the details in this tiny but nice specimen. 1 " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
Kolya Posted July 3, 2022 Author Share Posted July 3, 2022 Thanks a lot! I understant what do You mean about bryozoan, but it is not in this case. It is micro-relief for sure. But not only on sides, as I thoght, but also on others parts of surface. Few more photos: 1 Link to comment Share on other sites More sharing options...
siteseer Posted July 3, 2022 Share Posted July 3, 2022 I don't think you can narrow down the ID to genus. It's old enough that it could be from an extinct genus. If it's from a genus still living today, you might be able to narrow it down to some possibilities but it's almost as unlikely. Denticles change in shape on different parts of the body of an individual so you would need a guide that documents that for modern species. I don't think that guide exists. There is a guide for modern skates from a particular area (North Sea) but that probably won't help you. https://www.researchgate.net/publication/230211025_An_Identification_Key_for_Dermal_Denticles_of_Rajidae_from_the_North_Sea 2 1 Link to comment Share on other sites More sharing options...
abyssunder Posted July 3, 2022 Share Posted July 3, 2022 5 hours ago, Kolya said: Thanks a lot! I understant what do You mean about bryozoan, but it is not in this case. It is micro-relief for sure. But not only on sides, as I thoght, but also on others parts of surface. Few more photos: Yes, you're right. Thanks for the new pictures! 1 " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
Kolya Posted July 4, 2022 Author Share Posted July 4, 2022 12 hours ago, siteseer said: I don't think you can narrow down the ID to genus. It's old enough that it could be from an extinct genus. If it's from a genus still living today, you might be able to narrow it down to some possibilities but it's almost as unlikely. Denticles change in shape on different parts of the body of an individual so you would need a guide that documents that for modern species. I don't think that guide exists. There is a guide for modern skates from a particular area (North Sea) but that probably won't help you. https://www.researchgate.net/publication/230211025_An_Identification_Key_for_Dermal_Denticles_of_Rajidae_from_the_North_Sea Thank You very mch for the answer! Very nice paper! 1 Link to comment Share on other sites More sharing options...
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