Biology:Holophragma
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Short description: Extinct genus of corals
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.
| Holophragma | |
|---|---|
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| The species Holophragma calceoloides. | |
| Scientific classification | |
| Kingdom: | Animalia
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| Phylum: | |
| Class: | |
| Order: | |
| Family: | †Lykophyllidae
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| Genus: | †Holophragma Lindström, 1896
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| 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
- ↑ "Holophragma". Fossilworks. http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=5510.
- ↑ Sunstones and catskulls. Guide to the Fossils and geology of Gotland. Sara Elison. s.64. 2000
- ↑ "Holophragma". Fossiilid.info. https://fossiilid.info/7912?mode=in_baltoscandia&lang=en. Retrieved 2019-06-06.
Wikidata ☰ Q65044018 entry
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