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Cepphus columba Cepphus grylle Brachyramphus marmoratus Brachyramphus brevirostris Synthliboramphus wumizusume Synthliboramphus antiquus Synthliboramphus hypoleucus Uria aalge Uria lomvia Alca Fratercula corniculata Fratercula arctica Fratercula cirrhata Cyclorrhynchus Ptychoramphus Aethia
0 4.50 9 14 18 Time (MYA)
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