In cirripeds, small projections on occludent scutal margin formed by extensions of external growth ridges that interdigitate with similar teeth on margin of opposed scutum [Moore and McCormick, 1969].
(Subclass Cirripedia):
Barnacle plate feature: one in a series of small projections along margin of scutum facing aperture (occludent margin). Formed by extensions of growth ridges; fits into corresponding structures of opposed scutum when aperture is closed [Stachowitsch, 1992].
(Subclass Cirripedia):
Small projections on occludent scutal margin, formed by extensions of external growth ridges, interdigitating with teeth on margin of opposed scutum [McLaughlin, 1980].
Crustacea glossary. Natural History Museum of Los Angeles County. 2011.