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Showing results for tags 'artropoda'.
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It's an Ordovician decalcified mould of a....? Scale bar 5mm. One person told me that it might be arthropodian (for example the backside of an unidentified librigena), but all the others don't have any idea about it. I found on the "Treatise on invertebrate paleontology" (Part F - 1963) at p. F65 a resemblance with Conularia gracilis (first of all because it seems to lack transversal rows), also supported from a few very old pics from Google images. But I didn't find any modern confirmation of the "Conularia gracilis" existence. It could be a Conulariid (only 1 has ever been found in this formation)?
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What I believe to be a carpus of the major chela of a ghost shrimp. Not an unusual find for me, but this was found near an exposure of Pittsburgh Bluff formation where previously I have only found them in Astoria formation.