*** Welcome to piglix ***

Halysitidae

Halysitidae
Temporal range: Ordovician to Silurian
Halysitidae - Halysites catenularia.JPG
Halysites catenularia
Scientific classification
Kingdom: Animalia
Phylum: Cnidaria
Class: Anthozoa
Order: Tabulata
Family: Halysitidae
Milne-Edwards and Haime 1849

Halysitidae is an extinct family of tabulate corals.

These tabulate corals lived from Ordovician to Devonian (from 471.8 to 412.3 Ma). Fossil corals of the family Halysitidae have been found in the sediments of Afghanistan, Canada, United States, Venezuela and Australia.


...
Wikipedia

...