Tetracoralla

plural noun
Tet·​ra·​co·​ral·​la

Definition of Tetracoralla 

in some classifications

: a subclass or other group of Paleozoic corals in which the septa when present are usually in multiples of four and of which many are solitary and cornucopia-shaped and sometimes attain large size

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History and Etymology for Tetracoralla

New Latin, from tetra- + Latin coralla

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