Girvanella definitions

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Girvanella

Girvanella logo #10101) Burgess Shale fossil
Found on https://www.crosswordclues.com/clue/girvanella

Girvanella

Girvanella logo #21000 Girvanella is thought to represent the calcified sheath of a filamentous cyanobacterium known from the Burgess Shale and other Cambrian fossil deposits. ...
Found on http://en.wikipedia.org/wiki/Girvanella
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