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Morphology Ecology and taphonomy   Age range and collections

Pygasteroida

Echinoidea - Pygasteroida

Synonymy list
YearName and author
1957Pygasteroida Durham and Melville p. 253
1966Pygasteroida Fell p. U365
2002Pygasteroida Sepkoski, Jr.

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
Ambulacraria
phylumEchinodermata
RankNameAuthor
subphylumEchinozoa
classEchinoidea()
subclassEuechinoideaBronn 1860
superorderDiadematacea
orderPygasteroida
orderPygasteroida

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