Microzarkodina

Extinct genus of jawless fishes

Microzarkodina
Temporal range: Middle Ordovician
PreꞒ
O
S
D
C
P
T
J
K
Pg
N
Scientific classification
Kingdom:
Animalia
Phylum:
Chordata
Class:
†Conodonta
Order:
†Ozarkodinida
Genus:
Microzarkodina

Species
  • Microzarkodina bella
  • Microzarkodina flabellum
  • Microzarkodina hagetiana
  • Microzarkodina ozarkodella
  • Microzarkodina parva
  • Microzarkodina russica

Microzarkodina is an extinct genus of conodonts mainly from the Middle Ordovician of Baltoscandia. The Microzarkodina apparatus probably consisted of 15 or 17 elements: four P, two or four M and nine S elements. The S elements include different Sa, Sb1, Sb2, and Sc element types.[2]

Use in stratigraphy

The base of the Darriwilian, the fourth stage of the Ordovician, lies just above the North Atlantic Microzarkodina parva conodont zone.

References

  1. ^ Vom Anfang, Hochstand und Ende eines Epikontinentalmeeres. Maurits Lindström, Geologische Rundschau, March 1971, Volume 60, Issue 2, pages 419-438, doi:10.1007/BF02000464
  2. ^ Morphology, evolution and stratigraphic distribution in the Middle Ordovician conodont genus Microzarkodina. Anita Löfgren and Tatiana Tolmacheva, Earth and Environmental Science Transactions of the Royal Society of Edinburgh, Volume 99, Issue 01, March 2008, pages 27-48, doi:10.1017/S1755691008007056

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
  • Fahraeusodus?
  • Hamarodus?
  • Microzarkodina
  • Periodon
  • Pohlerodus
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
Microzarkodina


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