Isotremornis nordenskjoldi (Ameghino, 1905) Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Chordata class Aves order Sphenisciformes family Spheniscidae genus Paraptenodytes species Palaeospheniscus robustus Name Homonyms Isotremornis nordenskjoldi (Ameghino, 1905)