PaleoDB taxon number: 106259
Alternative combinations: Palaeospheniscus robustus, Perispheniscus robustus
Synonyms: Arthrodytes grandis Ameghino 1901 (no. 105867), Isotremornis nordenskjoldi Ameghino 1905 (no. 105864), Metancylornis curtus Ameghino 1901 (no. 105862), Paraptenodytes crassus Ameghino 1905 (no. 106261), Paraptenodytes curtus Ameghino 1901 (no. 105861), Paraptenodytes grandis Ameghino 1901 (no. 105866), Paraptenodytes nordenskjoldi Ameghino 1905 (no. 106260), Treleudytes crassa Ameghino 1905 (no. 105857), Treleudytes crassus Ameghino 1905 (no. 106286)
Full reference: F. Ameghino. 1894. Sur les oiseaux fossiles de Patagonie; et la faune mammalogique des couches à Pyrotherium. Boletin del Instituto Geographico Argentino 15:501-660
Belongs to Paraptenodytes according to C. Acosta Hospitaleche and C. Tambussi 2008
Sister taxa: Paraptenodytes antarcticus, Paraptenodytes brodkorbi
Ecology: ground dwelling carnivore