Periodon

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[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

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Conodont-like fossils
Protoconodontida?
(Probably stem-chaetognaths)
Paraconodontida
  • Diaphanodus?
  • Dolabrodus
  • Bengtsonella
  • Hunanognathus
  • Laiwugnathus
  • Prodistacodus?
  • Serratocambria
  • Shandongodus
  • Trolmenia
  • Yongshunella
Furnishinacea
Furnishinidae
  • Albiconus
  • Furnishina
  • Muellerodus
  • Nogamiconus
  • Proacodus
  • Problematoconites
  • Prooneotodus
  • Prosagittodontus
  • Proscandodus
Westergaardodinidae
Conodonta /
Conodontophorida /
"true conodonts" (Euconodonta)
see below
Cavidonti
Belodellida?
Ansellidae?
  • Ansella
  • Hamarodus?
  • Tokognathus?
Belodellidae
  • Belodella
  • Caenodontus?
  • Coelocerodontus
  • Drepanodistacodus?
  • Dvorakia
  • Stolodus
  • Walliserodus
Dapsilodontidae?
  • Besselodus?
  • Dapsilodus
Proconodontida
Cordylodontidae
Fryxellodontidae
  • Dzikodus?
  • Fryxellodontus
  • Kallidontus
  • Polonodus?
  • Pygodontidae?
Conodonti
  • Besselodus?
  • Cristodus?
  • Dapsilodus?
  • Loxodus?
  • Thrincodus?
Protopanderodontida
Acanthodontidae
  • Acanthodus
  • Kirkupodus
  • Parapaltodus
  • Scalpellodus?
  • Ulrichodina?
Clavohamulidae
  • Clavohamulus
  • Dasytodus
  • Eoserratognathus
  • Granatodontus
  • Hirsutodontus
  • Hispidodontus
  • Laiwunodus
  • Nericodus?
  • Paraserratognathus
Drepanoistodontidae?
(Distacodontidae)?
  • Distacodus
  • Drepanodus?
  • Drepanoistodus
  • Laurentoscandodus
  • Nordiodus?
  • Paltodus
  • Paroistodus
  • Venoistodus
Panderodontida
(Panderodontidae)
  • Belodina
  • Culumbodina
  • Naimanodus
  • Neopanderodus
  • Nudibelodina
  • Panderodus
  • Parabelodina
  • Parapanderodus
  • Plegagnathus
  • Pseudobelodina
  • Taoqupognathus
  • Belodellidae?
Protopanderodontidae
  • Aloxoconus?
  • Colaptoconus
  • Drepanodus
  • Eucharodus
  • Filodontus?
  • Molloydenticulus
  • Monocostodus
  • Oneotodus
  • Parutahconus
  • Planusodus
  • Polycostatus
  • Protopanderodus
  • Pseudooneotodus?
  • Semiacontiodus
  • Scolopodus
  • Staufferella
  • Striatodontus
  • Stultodontus
  • Teridontus
  • Utahconus
  • Variabiloconus
  • Ventricodus
Serratognathidae?
  • Serratognathoides
  • Serratognathus
Strachanognathidae?
(Cornuodontidae)?
  • Cornuodus
  • Decoriconus
  • Macerodus
  • Scabbardella
  • Strachanognathus
Prioniodontida
see below
incertae sedis
  • Multidentodus?
  • Rossodus
  • Schopfodus
  • Ansellidae?
Acodontidae?
  • Acodus
  • Diaphorodus
  • Nealeodus?
  • Pteracontiodus
  • Triangulodus
  • Tripodus
  • Tropodus
Balognathidae
Distomodontidae
Gamachignathidae?
  • Birksfeldia
  • Galerodus
  • Gamachignathus
Icrodellidae
  • Icriodella
  • Icriognathus
  • Pedavis
Icriodontidae
Jablonnodontidae?
  • Cononcfiodontus
  • Fungulodus
  • Jablonnodus
  • Mitrellataxis
Multioistodontidae
  • Dischidognathus
  • Leptochirognathus?
  • Multioistodus
  • Neomultioistodus
  • Wandelia
Nurrellidae?
  • Nurrella
Oistodontidae
  • Graciliconus
  • Histiodella
  • Juanognathus
  • Jumudontus
  • Loxognathodus
  • Loxodentatus
  • Oistodus
  • Oleandodus
  • Tricostatus
Ozarkodinida
see below
Paracordylodontidae
Periodontidae
Phragmodontidae
  • Acanthocordylodus
  • Acanthodina
  • Nordiora
  • Paraprioniodus
  • Phragmodus
  • Protophragmodus
Playfordiidae?
  • Playfordia
Plectodinidae
  • Bryantodina
  • Plectodina
  • Scyphiodus
Polyplacognathidae
  • Baltoplacognathus
  • Cahabagnathus
  • Polonodus?
  • Polyplacognathus
Prioniodinida
see below
Prioniodontidae
  • Angulodus
  • Astognathus
  • Cardiodella
  • Dichognathus
  • Drucognathus
  • Embsaygnathus
  • Eocarniodus
  • Eoneoprioniodus
  • Guizhouprioniodus
  • Kailidontus
  • Lambdagnathus
  • Prioniodus
  • Reutterodus
  • Stiptognathus
Pygodontidae?
  • Nericodus?
  • Pygodus
Rhipidognathidae
Anchignathodontidae
?Archeognathidae
?Belodontidae
  • Albiconus
  • Belodus
  • Bengtsonella
  • Cambropustula
  • Gumella
  • Hunanganthus
  • Lepognathus
  • Microcoelodus
  • Paibiconus
  • Ptiloconus
?Coleodontidae
Coleodontinae
Hibbardellinae
  • Diplododella
  • Elsonella
  • Hibbardella
  • Hibbardelloides
  • Ptilognathus
  • Roundya
  • Tetraprioniodus
  • Zentagnathus
Hindeodellinae
Ligonodinae
  • Euprioniodella
  • Euprioniodina
  • Hamulosodina
  • Hindeodelloides
  • Ligonodina
  • Lonchodina?
  • Lonchodus
  • Synprioniodina
Neoprioniodontinae
  • Leptochirognathus
  • Loxodus
  • Neoprioniodus
  • Pachysomia
  • Subprioniodus
Plectospathodontinae
  • Anastrophognathus
  • Aphelognathus
  • Gothodus
  • Keislognathus
  • Plectospathodus
Cryptotaxidae
?Eognathodontidae
  • Eognathodus
  • Gigantholus
  • Gondwania
  • Pseudogondwania
  • Rhodalepis
  • Schmidtognathus
  • Siphonodella
Elictognathidae
?Francodinidae
  • Francodina
  • Planadina
  • Sweetodina
  • Urbanekodina
  • Vogelgnathus
?Gladigondolellidae
  • Gladigondolella
Gondolellidae
Gnathodontidae
Idiognathodontidae
?Iowagnathidae
  • Iowagnathus
Kockelellidae
Mestognathidae
  • Laterignathus
  • Mestognathus
?Novispathodontidae
  • Discretella
  • Gongolelloides
  • Guanxidella
  • Icriospathodus
  • Kashmirella
  • Mosherella
  • Novispathodus
  • Smithodus
  • Sweetospathodus
  • Triassospathodus
Polygnathacea
Cavusgnathidae
Palmatolepidae
  • Conditolepis
  • Dinodus
  • Kielcelepis
  • Klapperilepis
  • Lagovilepis
  • Manticolepis
  • Mesotaxis
  • Palmatolepis
  • Panderolepis
  • Tripodellus
Polygnathidae
  • Avignathus
  • Bispathodus
  • Ctenopolygnathus
  • Mehlina
  • Nicollidina
  • Pandorinellina
  • Parapolygnathus
  • Polygnathus
  • Streptognathodus
  • Synclydagnathus
Pterospathodontidae
Spathognathodontidae
Sweetognathidae
?Trucherognathidae
  • Trucherognathus
?Vjalovognathidae
?Wapitiodontidae
  • Wapitiodus
Bactrognathidae
Chirognathidae
Ellisoniidae
?Oepikodontidae
  • Lissoepikodus
  • Oepikodus
Prioniodinidae
  • Bryantodus
  • Camptognathus
  • Chirodella
  • Cornuramia
  • Dyminodina
  • Falodus
  • Guizhoudella
  • Gyrognathus
  • Idioprionodus
  • Kamuellerella
  • Lagovidina
  • Metalonchodina
  • Multidentodus
  • Neoplectospathodus
  • Oulodus
  • Palmatodella
  • Pluckidina
  • Polygnathellus
  • Prioniodella
  • Prioniodina
  • Prionognathodus
  • Pristognathus
  • Scotlandia
  • Subbryantodus
  • Uncadina
  • Veghella
?Xaniognathidae
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Taxon identifiers
Periodon