Holophragma

Holophragma Temporal range: Ordovician–Silurian PreꞒ Ꞓ O S D C P T J K Pg N
Holophragma calceoloides
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Cnidaria
Subphylum:	Anthozoa
Class:	† Rugosa
Order:	† Stauriida
Family:	† Lykophyllidae
Genus:	† Holophragma Lindström, 1896
Species
See list of Holophragma species

Holophragma is an extinct genus of rugose coral known from Ordovician and Silurian rocks in Scandinavia, Russia, Australia and the United States. ^[1] Two of its species can be found on the northwestern coast of Gotland, where it is one of the most common fossil genera. ^[2] It was described by Gustaf Lindström in the year 1896. ^[3] The genus contains two species.

Description

Members of the genus Holophraga are small shoe- or horn-shaped corals. They usually lived on their side, with their calyx pointing upwards. H. calceoloides has a distinct cardinal septa, while H. mitrata does not.

Species

• Holophragma calceoloides Lindström, 1866
• Holophragma mitrata Schlotheim, 1820

References

1. "Holophragma". Fossilworks. Retrieved 17 December 2021.
2. Sunstones and catskulls. Guide to the Fossils and geology of Gotland. Sara Elison. s.64. 2000
3. "Holophragma". Fossiilid.info. Retrieved 2019-06-06.