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Opisthodactylus Ameghino 1891 (rhea)

Reptilia - Ornithurae - Rheidae

PaleoDB taxon number: 39282

Parent taxon: Rheidae according to J. I. Noriega et al. 2017

Sister taxa: Diogenornis, Heterorhea, Hinasuri, Protorhea, Rhea

Subtaxa: Opisthodactylus kirchneri, Opisthodactylus patagonicus

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Ecology: ground dwelling herbivore