Reptilia - Sphenisciformes - Spheniscidae
PaleoDB taxon number: 105570
Full reference: C. P. Tambussi, M. A. Reguero, S. A. Marenssi and S. N. Santillana. 2005. Crossvallia unienwillia, a new Spheniscidae (Sphenisciformes, Aves) from the Late Paleocene of Antarctica. Geobios 38(5):667-675
Parent taxon: Spheniscidae according to P. Jadwiszczak et al. 2013
Sister taxa: Anthropodyptes, Anthropornithinae, Aptenodytes, Apterodytes ictus, Arthrodytes, Dege, Delphinornis gracilis, Eudyptes, Eudyptula, Ichtyopteryx, Inguza, Madrynornis, Marplesornis, Megadyptes, Neculus, Nucleornis, Orthopteryx, Orthopteryx gigas, Palaeeudyptes, Palaeeudyptinae, Palaeoapterodytes, Paraptenodytes, Pseudaptenodytes, Pygoscelis, Spheniscinae, Spheniscus, Tereingaornis
Subtaxa: Crossvallia unienwillia, Crossvallia waiparensis
Ecology: ground dwelling carnivore