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Morphology Ecology and taphonomy   Age range and collections

Yunnanopleura

- Maikhanellidae

Taxonomy
Yunnanopleura was named by Yü (1987) [Sepkoski's age data: Cm Tomm-u Sepkoski's reference number: 951,1006]. It is not extant. Its type is Yunnanopleura biformis.

It was assigned to Purellinae by Feng et al. (2001); to Mollusca by Yü (1987) and Sepkoski (2002); and to Maikhanellidae by Ponder et al. (2007) and Parkhaev and Demidenko (2010).

Synonymy list
YearName and author
1987Yunnanopleura
2001Yunnanopleura Feng et al. p. 208
2002Yunnanopleura Sepkoski, Jr.
2007Yunnanopleura Ponder et al. p. 136
2010Yunnanopleura Parkhaev and Demidenko p. 997

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
RankNameAuthor
Schizocoela
phylumMollusca
familyMaikhanellidae
genusYunnanopleura

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
P. Y. Parkhaev and Y. Demidenko 2010"Shell cap-shaped, very low, moderately elongated. Apex hooked downwards and displaced anteriorly, projecting over anterior apertural margin. Posterior field evenly convex, become straight near aperture. Anterior field very short, straight or slightly concave. Aperture egg-shaped with pulled out anterior end. External shell ornamentation scaly, distinct near aperture and smoothed out dorsally. Scales elongated, parallel to growth lines. Anterior field bears larger and more prominent scales, which form triangular flattened dentition on anterior apertural margin."