Dictyonema flabelliforme

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Dictyonema flabelliforme One of the best known of all graptolite species, D. flabelliforme is characteristically conical or bell-shaped in outline, with numerous branches connected by horizontal crossbars (dissepiments). D.flabelliforme is a dendroid graptolite which was probably planktonic in its mode of life. It ranged from the Cambrian into the Carboniferous.