Australosphenida Temporal range: monotremes, if the group is polyphyletic then it also survives through Boreosphenida
It survives through | |
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Jaw fragment of Ambondro mahabo | |
Scientific classification ![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Mammalia |
Clade: | Australosphenida Luo, Cifelli, & Kielan-Jaworowska, 2001 |
Taxa | |
And see text |
The Australosphenida are a clade of mammals, containing mammals with tribosphenic molars, known from the Jurassic to Mid-Cretaceous of Gondwana. Although they have often been suggested to have acquired tribosphenic molars independently from those of Tribosphenida, this has been disputed. Fossils of australosphenidans have been found from the Jurassic of Madagascar and Argentina, and Cretaceous of Australia and Argentina. Monotremes have also been considered a part of this group in many studies, but this is also disputed.
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