? duplex Ameghino, 1901 Dataset GBIF Backbone Taxonomy Rank UNRANKED Classification kingdom Animalia phylum Chordata class Mammalia family Trigonostylopidae Name Homonyms ? duplex Unay, 1994 ? duplex Pisera & Studencki, 1989 ? duplex Wahlenberg, 1821 ? duplex Wiman, 1914 ? duplex Ameghino, 1901 ? duplex Cockerell, 1896 ? duplex Cooke, 1919 ? duplex Kütz. ? duplex Agassiz, 1843 ? duplex Chamberlin, 1925