graptolite

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noun grap·to·lite \ˈgrap-tə-ˌlīt\

Definition of graptolite

  1. :  any of an extinct class (Graptolithina) of hemichordate colonial marine animals of the Paleozoic era with zooids contained in conical cups along a chitinous support

Origin and Etymology of graptolite

Greek graptos painted (from graphein to write, paint) + English -lite — more at carve


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