Microzarkodina
{{Short description|Extinct genus of jawless fishes}}
{{Italic title}}
{{taxobox
| fossil_range = {{fossil range|Middle Ordovician}}
| regnum = Animalia
| phylum = Chordata
| classis = †Conodonta
| ordo = †Ozarkodinida
| familia =
| genus = †Microzarkodina
| genus_authority = Lindström, 1971Vom Anfang, Hochstand und Ende eines Epikontinentalmeeres. Maurits Lindström, Geologische Rundschau, March 1971, Volume 60, Issue 2, pages 419-438, {{doi|10.1007/BF02000464}}
| subdivision_ranks = Species
| subdivision =
- †Microzarkodina bella
- †Microzarkodina flabellum
- †Microzarkodina hagetiana
- †Microzarkodina ozarkodella
- †Microzarkodina parva
- †Microzarkodina russica
| synonyms =
}}
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.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}}
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
{{Reflist}}
External links
- {{eol|42349480}}
- {{fossilworks|id=33976|title = Microzarkodina|date=2 July 2016}}
{{Conodonts|3}}
{{Taxonbar|from=Q25349892}}
{{conodont-stub}}