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Scientific	Common name	Stato
Creagrus		genus
Creagrus furcatus		full species
Rissa		genus
Rissa tridactyla		full species
Rissa tridactyla tridactyla		nominal subspecies
Rissa tridactyla pollicaris		subspecies (candidate for split)
Rissa brevirostris		full species
Rissa estesi		fossil species (extinct)
Rissa [brevirostris or tridactyla]		species group
Pagophila		genus
Pagophila eburnea		full species
Xema		genus
Xema sabini		full species
Xema sabini (sabini)		nominal suspecies (sensu stricto)
Xema sabini (palaearctica)		junior synonym (or subspecies)
Xema sabini (tschuktschorum)		junior synonym (or subspecies)
Xema sabini (woznesenskii)		junior synonym (or subspecies)
Chroicocephalus		genus
Chroicocephalus (Gelastes)		genus (synonym)
Chroicocephalus (Bruchigavia)		genus (synonym)
Chroicocephalus brunnicephalus		full species
Chroicocephalus cirrocephalus		full species
Chroicocephalus cirrocephalus cirrocephalus		nominal subspecies
Chroicocephalus cirrocephalus poiocephalus		subspecies
Chroicocephalus hartlaubii		full species (or subspecies)

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