† ORDER SCALPELLOMORPHA BUCKERIDGE & NEWMAN, 2006

Diagnosis: Monophyletic by molecular analyses (except in the study by Herrera et al., 2015). Plesiomorphically, 14 plates present (carina, rostrum, paired scuta, terga, upper latera, carinolatera, inframedian latera and rostrolatera); plates reduced in some taxa, lost in many Lepadoidea .