ammonites
†order Astrapotheria Lydekker 1894 (placental mammal)

Mammalia - Theriiformes

Full reference: R. Lydekker. 1894. Contributions to a knowledge of the Fossil Vertebrates of Argentina. III - A study of extinct argentine ungulates. Anales del Museo de La Plata. Paleontología Argentina 2(3):1-86

Parent taxon: Meridiungulata according to M. C. McKenna 1975

Sister taxa: Litopterna, Notoungulata, Pyrotheria, Trigonostylopoidea, Xenungulata

Subtaxa: Astrapotheriidae, Eoastrapostylopidae, Trigonostylopidae

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Ecology: scansorial herbivore