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Micrina

Taxonomy
Micrina was named by Laurie (1986) [Sepkoski's age data: Cm Atda-u Sepkoski's reference number: 923,1006]. It is not extant.

It was assigned to Mitrosagophora by Sepkoski (2002); to Tannuolinidae by Li and Xiao (2004) and Holmer et al. (2008); and to Linguliformea by Holmer et al. (2011).

Synonyms
Synonymy list
YearName and author
1986Micrina Laurie
1988Mirabella Barskova
2002Micrina Sepkoski, Jr.
2002Mirabella Sepkoski, Jr.
2004Micrina Li and Xiao p. 901
2008Micrina Holmer et al. p. 724
2011Micrina Holmer et al. p. 237
2020Mirabella Wagner p. G1441

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
RankNameAuthor
superphylumLophotrochozoa
Lophophorata
phylumBrachiopodaCuvier 1805
subphylumLinguliformeaWilliams et al. 1996
genusMicrina

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Diagnosis
ReferenceDiagnosis
G. Li and S. Xiao 2004Micrina can be distinguished from Tannuolina by its bilaterally symmetrical mitral sclerites that bear two teeth, the absence of pores on the apical area of mitral sclerites, and the absence of a well-developed sella in sellate sclerites.