The evolutionary diversity of barnacles, with an updated classification of fossil and living forms Author Chan, Benny K. K. Author Dreyer, Niklas Author Gale, Andy S. Author Glenner, Henrik Author Ewers-Saucedo, Christine Author Pérez-Losada, Marcos Author Kolbasov, Gregory A. Author Crandall, Keith A. Author Høeg, Jens T. text Zoological Journal of the Linnean Society 2021 2021-02-25 193 789 846 journal article 3656 10.1093/zoolinnean/zlaa160 40324061-d8e8-4cfa-9151-4d7b110cff12 0024-4082 5637275 A77C1793-B652-41CE-BB27-CD2E29DEB201 SUPERFAMILY BALANOIDEA LEACH, 1817 Diagnosis: Wall composed of rostrum, carina and one to two pairs of marginals, or wholly concrescent; parietes solid or tubiferous; radii solid or tubiferous; basis commonly calcareous, solid or permeated by tubes, rarely membranous; when basis calcareous, internal surfaces of compartments commonly with uniform ribs and interdigitations with wall; mandible quadri- or quinquidentate; caudal appendages absent; penis with basidorsal point; first three pairs of cirri are maxillipeds. C o m m e n t s: T h e s p e c i e s a t p r e s e n t a n a l y s e d molecularly form two distinct clades that are here recognized as the Balanidae and Pyrgomatidae . Relationships of the many species within each of these are much less clear and clearly in need of future analysis by molecular methods.