After Howard, 1976, Olson, 1981, 1985, Feduccia, 1980, 1996, Sibley & Monroe, 1990, and Peterson, 2002-2004, with Finnish vernacular names from Lokki, Jännes & Nikander, 1992

<==o Aethiini (kiislaset)
   |--o Ptychoramphus Brandt, 1837 (ulappakiislaset)
   |  |-- †P. tenuis
   |  `--o P. aleuticus (Pallas, 1811) (ulappakiislanen)
   |     |-- P. a. aleuticus (Pallas, 1811)
   |     `-- P. a. australis Van Rossem, 1939
   |-- Cyclorrhynchus psittacula (Pallas, 1769) [Aethia psittacula (Pallas, 1769); Peterson, 2002-2004] (punanokkakiislanen)
   `--o Aethia Merrem, 1788 (kiislaset)
      |-- A. cristatella (Pallas, 1769) (töyhtökiislanen)
      |-- †A. rossmoori
      |-- †A. sp.
      |-- A. pusilla (Pallas, 1811) (pikkukiislanen)
      `-- A. pygmaea (Gmelin, 1789) (hapsukiislanen)


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