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Hexactinellida - Hexactinosa - Aulocalycidae

Polygonatium was named by Schrammen (1937) [Sepkoski's age data: J Oxfo-l Sepkoski's reference number: 1066]. It is not extant. Its type is Polygonatium sphaeroides.

It was assigned to Lychniscosa by Sepkoski (2002); and to Aulocalycidae by Finks et al. (2004).

Synonymy list
YearName and author
1937Polygonatium Schrammen
2002Polygonatium Sepkoski, Jr.
2004Polygonatium Finks et al. p. 507

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phylumPoriferaGrant 1836
classHexactinellidaSchmidt 1870
subclassHexasterophoraSchulze 1886
orderHexactinosaSchrammen 1903
familyAulocalycidaeIjima 1927
genusPolygonatiumSchrammen 1937

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.

No diagnoses are available