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Hemithylus

Echinoidea - Phymosomatidae

Taxonomy
Hemithylus is a genus. It is not extant.

It was assigned to Phymosomatidae by Fell and Pawson (1966); and to Phymosomatoida by Sepkoski (2002).

Synonymy list
YearName and author
1966Hemithylus Fell and Pawson p. U399
2002Hemithylus Sepkoski, Jr.

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
Ambulacraria
phylumEchinodermata
subphylumEchinozoa
classEchinoidea()
RankNameAuthor
subclassEuechinoideaBronn 1860
superorderAcroechinoidea()
Carinacea
Calycina(Gregory 1900)
suborderPhymosomatoida()
familyPhymosomatidae
genusHemithylus

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