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Siphonia (Pachycalymma)
Taxonomy
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).
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).
Subtaxa
Pachycalymma subglobosa (type species)
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1901 | Pachycalymma Schrammen |
| 2002 | Pachycalymma Sepkoski |
| 2004 | Siphonia (Pachycalymma) Finks et al. p. 210 |
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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.
Subg. †Siphonia (Pachycalymma) Schrammen 1901
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†Pachycalymma subglobosa Schrammen 1901
Diagnosis
No diagnoses are available