''Grewingkia'' is a genus of extinct

Paleozoic The Paleozoic (or Palaeozoic) Era is the earliest of three geologic eras of the Phanerozoic Eon. The name ''Paleozoic'' ( ;) was coined by the British geologist Adam Sedgwick in 1838 by combining the Greek words ''palaiós'' (, "old") and ' ...

coral Corals are marine invertebrates within the class Anthozoa of the phylum Cnidaria. They typically form compact colonies of many identical individual polyps. Coral species include the important reef builders that inhabit tropical oceans and ...

s, found in Indiana. It contains at least one species, ''Grewingkia canadensis''.

References

Rugosa Prehistoric Hexacorallia genera Paleozoic life of Ontario Paleozoic life of Alberta Paleozoic life of British Columbia Paleozoic life of Manitoba Paleozoic life of the Northwest Territories Paleozoic life of Nunavut Fossil taxa described in 1862 {{paleo-hexacorallia-stub