Fusulinidae

Translingual

Proper noun

Fusulinidae

  1. A taxonomic family within the order Fusulinida – certain fusulinacean foraminifera from the upper Carboniferous (Lower Pennsylvanian, Morrowan) to the Upper Permian (Guadalupian), tests of which are fusiform to subcylindrical with walls of two to four layers.
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