THORACICA DARWIN, 1854

Chan, Benny K. K., Dreyer, Niklas, Gale, Andy S., Glenner, Henrik, Ewers-Saucedo, Christine, Pérez-Losada, Marcos, Kolbasov, Gregory A., Crandall, Keith A. & Høeg, Jens T., 2021, The evolutionary diversity of barnacles, with an updated classification of fossil and living forms, Zoological Journal of the Linnean Society 193, pp. 789-846 : 826-827

INFRACLASS THORACICA DARWIN, 1854

Diagnosis: Monophyletic in all molecular analyses. Body consists of a capitulum raised on a flexible peduncle, or the peduncle secondarily lost; capitulum armed with at least paired scuta–terga; plates may be lost secondarily.

Comment: None of the morphological characters is necessarily an apomorphy compared with the remaining Cirripedia.

In the subsequent taxonomic ranking, taxa containing both fossils and extant species are indicated with †. Taxa with fossil species alone are indicated with ††.