Parent: Charadriiformes (Shore birds)

└─ Alcidae (Auks)

└─── Aethia (Least auklets)

└─── Alca (Razorbills)

└─── Alle (Dovekies)

└─── Brachyramphus (Marbled murrelets)

└─── Cepphus (Guillemots)

└─── Cerorhinca (Rhinoceros auklets)

└─── Fratercula (Puffins)

└─── Pinguinus (Great auks)

└─── Ptychoramphus (Cassin's auklets)

└─── Synthliboramphus (Ancient murrelets)

└─── Uria (Murres)