Mammalia - Panameriungulata - Macraucheniidae
Synonym: Megacrodon Roth 1899
Full reference: S. Roth. 1899. Aviso preliminar sobre mamíferos mesozóicos encontrados en Patagonia [Preliminary notice on Mesozoic mammals found in Patagonia]. Revista del Museo de La Plata 9:381-388
Parent taxon: Cramaucheniinae according to G. I. Schmidt and B. S. Ferrero 2014
See also Carroll 1988, Cifelli 1983, Gelfo 2010, Roth 1899 and Simpson 1948
Sister taxa: Coniopternium, Cramauchenia, Pternoconius, Theosodon, Theosodontinae
Subtaxa: Polymorphis alius Polymorphis lechei Polymorphis planus
Type: Polymorphis lechei
Ecology: scansorial herbivore
Distribution:
• Eocene of Argentina (3 collections)
Total: 3 collections including 4 occurrences
Specimen images are retrieved through the ePANDDA API.
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