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Morphology Ecology and taphonomy   Age range and collections

Pycnolepas

Cirripedia - Sessilia - Brachylepadidae

Synonymy list
YearName and author
1914Pycnolepas Withers
1980Pycnolepas Collins p. 22
2000Pycnolepas Carriol and Collins p. 143
2002Pycnolepas Sepkoski, Jr.
2007Pycnolepas Jagt et al. p. 34

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Ecdysozoa
Panarthropoda
phylumArthropodaLatreille 1829
subphylumMandibulata
RankNameAuthor
Pancrustacea
subphylumCrustaceaBrĂ¼nnich 1772
classCirripediaRafinesque 1816
superorderThoracica(Darwin 1854)
orderSessiliaLamarck 1818
suborderBrachylepadomorphaWithers 1923
familyBrachylepadidaeWoodward 1901
genusPycnolepasWithers 1914

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
ReferenceDiagnosis
J. W. M. Jagt et al. 2007Sessile; shell laterally flattened; carina (semi-)cylindrical; three to four outer whorls of imbricating plates with inwardly projecting ledge bearing median basal socket (?muscle pit); basis probably membranous (Withers, 1953: 345; Newman et al., 1969: R283).