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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).
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).
Species
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1986 | Micrina Laurie |
| 1988 | Mirabella Barskova |
| 2002 | Micrina Sepkoski |
| 2002 | Mirabella Sepkoski |
| 2004 | Micrina Li and Xiao p. 901 |
| 2008 | Micrina Holmer et al. p. 724 |
| 2011 | Micrina Holmer et al. p. 237 |
| 2023 | Mirabella Wagner p. G1441 |
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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.
G. †Micrina Laurie 1986
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†Micrina etheridgei Tate 1892
†Micrina pusilla Gravestock et al. 2001
†Micrina ridicula Barskova 1988
†Micrina xiaofanensis Li and Xiao 2004
Invalid names: Mirabella Barskova 1988 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| G. Li and S. Xiao 2004 | Micrina 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. |