Halysites

Halysites Temporal range: Ordovician to Silurian
Halysites sp. from the Silurian of Ohio; view of colony surface.
Scientific classification
Kingdom:	Animalia
Phylum:	Cnidaria
Class:	Anthozoa
Order:	Tabulata
Family:	Halysitidae
Genus:	Halysites von Waldheim 1828

Halysites (meaning chain coral) is an extinct genus of tabulate coral. Colonies range from less than one to tens of centimeters in diameter, and they fed upon plankton.

These tabulate corals lived from Ordovician to Silurian (from 449.5 to 412.3 Ma). Fossils of Halysites species have been found in the sediments of Canada, United States, Poland and Australia.

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