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Sigmelasma
Taxonomy
Sigmelasma was named by Potter (1990) [Sepkoski's age data: O Llde O Ashg Sepkoski's reference number: 912]. Its type is Sigmelasma pantherae.
It was assigned to Orthida by Sepkoski (2002); and to Wangyuiidae by Williams et al. (2000), Hints (2012).
It was assigned to Orthida by Sepkoski (2002); and to Wangyuiidae by Williams et al. (2000), Hints (2012).
Species
S. pantherae (type species), S. peepi
Synonymy list
| Year | Name and author |
|---|---|
| 1990 | Sigmelasma Potter |
| 2000 | Sigmelasma Williams et al. p. 779 |
| 2002 | Sigmelasma Sepkoski |
| 2012 | Sigmelasma Hints |
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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. †Sigmelasma Potter 1990
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†Sigmelasma pantherae Potter 1990
†Sigmelasma peepi Hints 2012
Diagnosis
No diagnoses are available