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Hemicosmitoida

Rhombifera

Taxonomy
Hemicosmitida was named by Jaekel (1918).

It was corrected as Hemicosmitoida by Paul et al. (2017).

It was assigned to Rhombifera by Regnéll (1945) and Paul et al. (2017).

Synonymy list
YearName and author
1918Hemicosmitida Jaekel
1945Hemicosmitida Regnéll
2017Hemicosmitoida Paul et al.

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
Ambulacraria
RankNameAuthor
phylumEchinodermata
subphylumBlastozoaSprinkle 1973
orderRhombiferaZittel 1879
superfamilyHemicosmitoida(Jaekel 1918)
superfamilyHemicosmitoida(Jaekel 1918)

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
C. R. C. Paul et al. 2017A dichoporite superfamily with well developed heteromorphic stem; theca composed of three or four basals, six infra-laterals, eight or nine laterals all of which bear cryptorhombs, and additional plates in the oral region; with three or four primary ambulacra (after Lanc, McDermott & Paul, 2015, p. 4).