Clarkina
{{short description|Genus of fishes (fossil)}}
{{Italic title}}
{{taxobox
| fossil_range = {{fossil range|Permian}}
| regnum = Animalia
| phylum = Chordata
| classis = †Conodonta
| ordo = †Ozarkodinida
| familia = †GondolellidaeAge and paleoecology of the conodont Clarkina changxingensis (Wang & Wang). Heinz Kozur, January 1992
| genus = †Clarkina
| genus_authority = Kozur 1990Kozur, Cour Forschungsinst Senckenb, 1990, volume 117, page 414
| type_species =
| type_species_authority =
| subdivision_ranks = Species
| subdivision =
- †Clarkina changxingensis
- †Clarkina crofti Kozur & LucasGuadalupian (Middle Permian) Conodonts of Sponge-Bearing Limestones from the Margins of the Delaware Basin, West Texas. Kozur H. and Mostler H., Geologia Croatica, 1995, 48(2), pages 107-128 ([http://hrcak.srce.hr/18000 abstract], retrieved 08 June 2016)
- †Clarkina deflecta
- †Clarkina leveni
- †Clarkina orientalis
- †Clarkina postbitteri
- †Clarkina postbitteri hongshuiensis
- †Clarkina postbitteri postbitteri
- †Clarkina wangi
- †Clarkina subcarinata
| synonyms = ?NeogondolellaPalaeoecology of the conodonts Hindeodus and Clarkina during the Permian–Triassic transitional period. Xulong Lai, Paul Wignall and Kexin Zhang, Palaeogeography, Palaeoclimatology, Palaeoecology, Volume 171, Issues 1–2, 1 July 2001, Pages 63–72, {{doi|10.1016/S0031-0182(01)00269-3}}
}}
Clarkina is an extinct genus of conodonts. It is considered to be an offshore, outer shelf or basinal, deep-water taxon.
The genus name is a tribute to David Leigh Clark.
Synonyms
Clarkina Soodan 1975 is a junior synonym for the prehistoric sea cucumber Soodanella Huddleston 1982 in the family Priscopedatidae.
Clarkina Jordan & Evermann, 1927 is a junior synonym for the cyprinid fish genus Mylocheilus Agassiz, 1855.
Use in stratigraphy
The top of the Capitanian (or the base of the Wuchiapingian) is defined as the place in the stratigraphic record where the conodont subspecies Clarkina postbitteri postbitteri first appears.
The top of the Wuchiapingian (or the base of the Changhsingian) is defined as the place in the stratigraphic record where the conodont species Clarkina wangi first appears. The global reference section is profile D at Meishan, in the type area in Changxing.
References
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External links
{{Conodonts|5}}
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