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Polyplacidia

Echinoidea - Phymosomatoida - Phymosomatidae

Taxonomy
Polyplacidia was named by Poretskaya (1968) [Sepkoski's age data: T Eo Sepkoski's reference number: 956].

It was assigned to Phymosomatidae by Kier and Lawson (1978); and to Phymosomatoida by Sepkoski (2002).

Synonymy list
YearName and author
1968Polyplacidia Poretskaya pp. 287-289
1978Polyplacidia Kier and Lawson p. 32
2002Polyplacidia Sepkoski, Jr.

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
Ambulacraria
phylumEchinodermata
subphylumEchinozoa
classEchinoidea()
RankNameAuthor
subclassEuechinoideaBronn 1860
infraclassAcroechinoidea()
Carinacea
Calycina(Gregory 1900)
orderPhymosomatoida()
familyPhymosomatidae
genusPolyplacidiaPoretskaya 1968

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