Macrocyprididae, Familia
Macrocypris, Genus
Macropipus, Genus
Macropodia, Genus
Macrostylidae, Familia
Macrostylis, Genus
Maera, Genus
Maerella, Genus
Maja, Genus
Majidae, Familia
Malacostraca, Classis
Malacostraca, Subclassis
Megaluropidae, Familia
Megaluropus, Genus
Megamphopus, Genus
Meganyctiphanes, Genus
Meiosquilla, Genus
Melita, Genus
Melitidae, Familia
Melphidippa, Genus
Melphidippella, Genus
Melphidippidae, Familia
Menigrates, Genus
Menigratopsis, Genus
Mesopodopsis, Genus
Metopa, Genus
Microdeutopus, Genus
Microprotopus, Genus
Monoculodes, Genus
Monodaeus, Genus
Munida, Genus
Munna, Genus
Munnidae, Familia
Munnopsidae, Familia
Munnopsis, Genus
Mysida, Subordo
Mysidacea, Ordo
Mysidae, Familia
Mysidopsis, Genus