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Semielliptotheca

Orthothecida - Orthothecidae

Taxonomy
Semielliptotheca was named by Syssoiev (1958) [Sepkoski's age data: Cm Tomm-l O m Sepkoski's reference number: 1,1006].

It was assigned to Orthothecidae by Fisher (1962); to Hyolitha by Malinky (1990); and to Orthothecida by Sepkoski (2002).

Synonymy list
YearName and author
1958Semielliptotheca Syssoiev
1962Semielliptotheca Fisher p. 127
1990Semielliptotheca Malinky p. 228
2002Semielliptotheca Sepkoski, Jr.

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Eutriploblastica
Neotriploblastica
Eucoelomata
superphylumLophotrochozoa
RankNameAuthor
Lophophorata
phylumHyolitha
orderOrthothecida
familyOrthothecidae
genusSemielliptothecaSyssoiev 1958

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
No diagnoses are available