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Is this some kind of coral?


wiktia

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Looks pretty cool, but I have no idea what it is. I am sure someone on this forum will know.

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6 hours ago, wiktia said:

Found on the Baltic beach in Lithuania, any idea what it is?

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My guess is some species of button coral. 

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More likely a bryozoan. Reminds me of Prasopora.

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The shape, inverted parabola ?

Did these little dudes study geometry ?

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I’m with @Al Dente, looks a lot like a Prasopora, especially the bottom (flattish side). Any idea of what age it came from?

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Steffen Langusch

Yes, it seems to be a hemispherical trepostomate bryozoa, probably of Ordovician age. It is more a kind of habit than a special genus, I think. An older "collectors name" is Diplotrypa, but also Esthoniopora, Orbipora, Revalotrypa and many other trepostomate bryozoa can have such a hemispherical habit.

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