Basic info Taxonomic history Classification Relationships
Morphology Ecology and taphonomy External Literature Search Age range and collections

Pycnactis

Anthozoa - Stauriida - Lykophyllidae

Taxonomy
Pycnactis was named by Ryder (1926) [Sepkoski's age data: S Ldov-m S Ludl Sepkoski's reference number: 711]. It is not extant.

It was assigned to Lykophyllinae by Hill (1956); to Lykophyllidae by Hill (1981); and to Rugosa by Sepkoski (2002).

Synonymy list
YearName and author
1926Pycnactis Ryder
1956Pycnactis Hill
1981Pycnactis Hill
2002Pycnactis Sepkoski, Jr.

Is something missing? Join the Paleobiology Database and enter the data

RankNameAuthor
kingdomAnimalia()
Neuralia
phylumCnidariaHatschek 1888
classAnthozoaEhrenberg 1834
subclassRugosa(Milne-Edwards and Haime 1850)
RankNameAuthor
orderStauriidaVerrill 1865
suborderLycophyllinaZhavoronkova 1972
familyLykophyllidaeWedekind 1927
genusPycnactisRyder 1926

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