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Rhabdinopora

RHABDINOPORA The genus Rhabdinopora, originally known as Dictyonema, is cHaracterized by its conical form and small thecae. It had numerous branches arising from the sicula. The branches are connected by dissepiments, giving a reticulate appearance (such dissepiments were lost on later graptoloids).

Habitat: This fossil genus is commonly found in masses, and is believed to be the earliest planktonic graptolite.

© 1992 Cyril Walker, David Ward .