expand Biota
expand Animalia
expand Echinodermata
expand Asterozoa
expand Arthropoda
expand Crustacea
expand Multicrustacea
expand Malacostraca
expand Eumalacostraca
expand Peracarida
expand Amphipoda
expand Gammaridea
expand Senticaudata
expand Corophiida
expand Amphilochidea
expand Cumacea
expand Isopoda
▪ Mysidacea [objective synonym]
expand Mollusca
expand Bivalvia
expand Heterodonta
expand Euheterodonta
expand Imparidentia
expand Gastropoda
expand Caenogastropoda
expand Neogastropoda
expand Littorinimorpha
expand Heterobranchia
expand Aculifera
expand Aplacophora
▪ Chaetodermomorpha [subjective synonym]
expand Annelida
expand Polychaeta
expand Errantia
expand Phyllodocida
expand Sedentaria
expand Scolecida
▪ Scalibregmidae [objective synonym]
▪ Questidae [subjective synonym]
expand Canalipalpata
expand Terebellida
expand Terebellomorpha
expand Sabellida
▪ Spirorbidae [lexical variant]
expand Cnidaria
expand Bryozoa
expand Gymnolaemata
expand Cheilostomatida
expand Flustrina