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Morphology Ecology and taphonomy   Age range and collections

Siphonia (Pachycalymma)

Demospongea - Tetralithistida - Siphoniidae

Pachycalymma was named by Schrammen (1901) [Sepkoski's age data: K Sn]. It is not extant. Its type is Pachycalymma subglobosa.

It was reranked as Siphonia (Pachycalymma) by Finks et al. (2004).

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

Pachycalymma subglobosa (type species)
Species lacking formal opinion data

View classification of included taxa

Synonymy list
YearName and author
1901Pachycalymma Schrammen
2002Pachycalymma Sepkoski, Jr.
2004Siphonia (Pachycalymma) Finks et al.

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phylumPoriferaGrant 1836
classDemospongea(Sollas 1875)
subclassLithistida(Schmidt 1870)
orderTetralithistidaLagneau-Hérenger 1962
suborderTetracladinaZittel 1878
familySiphoniidaed'Orbigny 1851
subfamilySiphoniinaed'Orbigny 1851
genusSiphoniaGoldfuss 1826
subgenusPachycalymma(Schrammen 1901)

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