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Nanorthis

Rhynchonellata - Orthida - Plectorthidae

Taxonomy
Nanorthis was named by Ulrich and Cooper (1936) [Sepkoski's age data: O Trem-l O Aren-l Sepkoski's reference number: 1]. Its type is Orthis hamburgensis. It is the type genus of Nanorthidae.

It was assigned to Orthinae by Ulrich and Cooper (1936); to Nanorthidae by Williams et al. (2000); to Orthida by Sepkoski (2002); and to Plectorthidae by Williams et al. (2007).

Synonyms
Synonymy list
YearName and author
1936Nanorthis Ulrich and Cooper p. 621
2000Nanorthis Williams et al. p. 742
2002Evenkinorthis Sepkoski, Jr.
2002Nanorthis Sepkoski, Jr.
2007Nanorthis Williams et al. p. 2690

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Eutriploblastica
Neotriploblastica
Eucoelomata
superphylumLophotrochozoa
Lophophorata
phylumBrachiopodaCuvier 1805
RankNameAuthor
subphylumRhynchonelliformeaWilliams et al. 1996
classRhynchonellataWilliams et al. 1996
orderOrthidaSchuchert and Cooper 1932
suborderOrthidinaSchuchert and Cooper 1932
superfamilyPlectorthoideaSchuchert and Le Vene 1929
familyPlectorthidaeSchuchert and Le Vene 1929
genusNanorthis

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
E. O. Ulrich and G. A. Cooper 1936Small, subcircular, fascicostellate, dorsal interior like Archaeorthis, but ventral valve without muscular callosity.