Extinct genus of jawless fishes
Microzarkodina
Temporal range: Middle Ordovician
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Scientific classification
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†Microzarkodina
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Species
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- †Microzarkodina bella
- †Microzarkodina flabellum
- †Microzarkodina hagetiana
- †Microzarkodina ozarkodella
- †Microzarkodina parva
- †Microzarkodina russica
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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.