Periodon

Periodon Temporal range: Ordovician PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Conodonta
Order:	Priodontina
Genus:	Periodon Hadding, 1913

Periodon is a genus of conodonts which existed in what is now Canada, Iran, Argentina, China, Russia, and the United States during the Ordovician Period. It was described by Hadding in 1913, and the type species is P. aculeatus.

Species

• Periodon flabellum Lindström, 1954
• Periodon zgierzensis Dzik, 1976
• Periodon aculeatus Hadding, 1913^[1]
• Periodon selenopsis Serpagli, 1974^[2]
• Periodon macrodentatus (Graves & Ellison 1941)
• Periodon hankensis Svend Stouge, 2012^[3]

References

1. Dubinina, S. V., and A. V. Ryazantsev (2008), Conodont stratigraphy and correlation of the Ordovician volcanogenic and volcanogenic sedimentary sequences in the South Urals, Russ. J. Earth Sci., 10, ES5001, doi:10.2205/2008ES000302.
2. The Base of the Middle Ordovician Series Using Graphic Correlation Method Svend Stouge, Wang Xiofeng, Li Zhihong, Chen Xiaohong, and Wang Chuanshang.
3. Svend Stouge (2012). "Middle Ordovician (late Dapingian–Darriwilian) conodonts from the Cow Head Group and Lower Head Formation, western Newfoundland, Canada". Canadian Journal of Earth Sciences. 49 (1): 59–90. doi:10.1139/e11-057.

External links

• Periodon at the Paleobiology Database