Английская Википедия:Holophragma
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Шаблон:Short description 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
Шаблон:Paleo-hexacorallia-stub
Шаблон:Silurian-animal-stub
- ↑ Шаблон:Cite web
- ↑ Sunstones and catskulls. Guide to the Fossils and geology of Gotland. Sara Elison. s.64. 2000
- ↑ Шаблон:Cite web