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Cone shaped thing in matrix from Seymour Island, Antarctica


David Cothran

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Near the K-T boundary there; below, I think.  A solitary rugose coral?  But the striations look wrong to me.  Loose on surface.

743E9D39-11BA-4A5E-865F-2C8E1A064E80.jpeg

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It could be a Pinnidae bivalve, but  could it be a rudist bivalve?

One picture is not enogh for the answer, in my thinking. :)

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