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Qilianotryma
Taxonomy
Qilianotryma was named by Xu (1979) [Sepkoski's age data: O m Sepkoski's reference number: ZR84]. It is not extant. Its type is Qilianotryma mirabile.
It was assigned to Spirigerininae by Popov et al. (1999) and Williams et al. (2002); and to Atrypida by Sepkoski (2002).
It was assigned to Spirigerininae by Popov et al. (1999) and Williams et al. (2002); and to Atrypida by Sepkoski (2002).
Species
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1979 | Qilianotryma Xu |
| 1999 | Qilianotryma Popov et al. p. 632 |
| 2002 | Euroatrypa Sepkoski |
| 2002 | Orthocarina Sepkoski |
| 2002 | Qilianotrypa Sepkoski |
| 2002 | Qilianotryma Williams et al. p. 1432 |
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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. †Qilianotryma Xu 1979
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†Qilianotryma mirabile Xu 1979
†Qilianotryma striatum Xu 1979
†Qilianotryma suspectum Nikiforova et al. 1982
Invalid names: Euroatrypa [synonym], Orthocarina [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| L.E. Popov et al. 1999 | Atrypinidae with dorsibiconvex, transverse shell; ventral beak strongly curved dorsally; posterior commissure wide, broadly rounded, anterior commissure parasulcate; ventral sulcus and dorsal median fold originating at the umbonal area and sharpened by low, angular plications on flanks; radial ornament fine, equally multicostellate with accentuated median rib in ventral valve; ventral interior with hinge teeth strong; dental plates rudimentary or absent; dorsal interior with very fine median ridge and pair of oblique submedian ridges; spiralia with up to six whorls and with apices directed dorso-medially, jugum incomplete, located posteriorly. |