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Demospongea - Anthaspidellidae

Protachilleum was named by Zittel (1877) [Sepkoski's age data: S]. It is not extant. Its type is Protachilleum kayseri.

It was assigned to Anthaspidellidae by Beresi and Rigby (1993); and to Lithistida by Sepkoski (2002).

Synonymy list
YearName and author
1877Protachilleum Zittel
1993Protachilleum Beresi and Rigby
2002Protachilleum Sepkoski, Jr.

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phylumPoriferaGrant 1836
classDemospongea(Sollas 1875)
subclassLithistida(Schmidt 1870)
suborderOrchocladinaRauff 1895
familyAnthaspidellidaeMiller 1889
genusProtachilleumZittel 1877

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