*** Welcome to piglix ***

Microzarkodina

Microzarkodina
Temporal range: Middle Ordovician
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Conodonta
Order: Ozarkodinida
Genus: Microzarkodina
Lindström, 1971
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.

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


...
Wikipedia

...