User:Phaulactis/sandbox/Holophragma

Holophragma is a genus of rugose coral known from the ordovician and silurian periods in Europe. Two of its species are commonly found on the northwestern coast of Gotland, Sweden. It was descriped by Gustaf Lindström in the year 1896. The genus contains several species.

Species

 * Holophragma calceolides Lindström, 1866
 * Holophragma mitrata Schlotheim, 1820
 * Holophragma duncanae Spjeldnæs, 1960