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Periodon

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Genus of jawless fishes

Periodon
Temporal range: Ordovician PreꞒ 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
  • Periodon selenopsis Serpagli, 1974
  • Periodon macrodentatus (Graves & Ellison 1941)
  • Periodon hankensis Svend Stouge, 2012

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

Conodonts
Conodont-like fossils
Protoconodontida?
(Probably stem-chaetognaths)
Paraconodontida
Furnishinacea
Furnishinidae
Westergaardodinidae
Conodonta /
Conodontophorida /
"true conodonts" (Euconodonta)
see below
Conodonta
Cavidonti
Belodellida?
Ansellidae?
Belodellidae
Dapsilodontidae?
Proconodontida
Cordylodontidae
Fryxellodontidae
Conodonti
Protopanderodontida
Acanthodontidae
Clavohamulidae
Drepanoistodontidae?
(Distacodontidae)?
Protopanderodontidae
Serratognathidae?
Strachanognathidae?
(Cornuodontidae)?
Panderodontida
Panderodontidae
Prioniodontidasee below
Prioniodontida
incertae sedis
Acodontidae?
Balognathidae
Distomodontidae
Gamachignathidae?
Icrodellidae
Icriodontidae
Jablonnodontidae?
Multioistodontidae
Nurrellidae?
Oistodontidae
Ozarkodinidasee below
Paracordylodontidae
Periodontidae
Phragmodontidae
Playfordiidae?
Plectodinidae
Polyplacognathidae
Prioniodinidasee below
Prioniodontidae
Pygodontidae?
Rhipidognathidae
Ozarkodinida
Anchignathodontidae
?Archeognathidae
?Belodontidae
?Coleodontidae
Coleodontinae
Hibbardellinae
Hindeodellinae
Ligonodinae
Neoprioniodontinae
Plectospathodontinae
Cryptotaxidae
?Eognathodontidae
Elictognathidae
?Francodinidae
?Gladigondolellidae
Gondolellidae
Gnathodontidae
Idiognathodontidae
?Iowagnathidae
Kockelellidae
Mestognathidae
?Novispathodontidae
Polygnathacea
Cavusgnathidae
Palmatolepidae
Polygnathidae
Pterospathodontidae
Spathognathodontidae
Sweetognathidae
?Trucherognathidae
?Vjalovognathidae
?Wapitiodontidae
Prioniodinida
Bactrognathidae
Chirognathidae
Ellisoniidae
?Oepikodontidae
Prioniodinidae
?Xaniognathidae
Taxon identifiers
Periodon
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