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.
The Australosphenida are a clade of mammals, containing mammals with tribosphenic molars, known from the Jurassic to Mid-Cretaceous of Gondwana. Although...
Shuotheriidae, an extinct group of mammals from the Jurassic of Eurasia, with Australosphenida, a group of mammals known from the Jurassic to Cretaceous of Gondwana...
recently discovered fossil forms into a proposed new clade known as the Australosphenida, and also suggest that the triangular array of cusps may have evolved...
Monotremes have been considered by some authors to be members of Australosphenida, a clade that contains extinct mammals from the Jurassic and Cretaceous...
echidnas, the platypus, and their extinct relatives) into the clade Australosphenida, which would have acquired tribosphenic molars independently from marsupials...
Kuehneotheriidae, Eupantotheria, and Australosphenida.) They share the tribosphenic molars with the Australosphenida but differ from them by having cingulid...
represented only by teeth and jaw fragments, which is not very helpful. Australosphenida is a group that has been defined in order to include the Ausktribosphenidae...
in the two lineages. This inspired the creation of the subclasses Australosphenida—the monotremes and extinct relatives—and Tribosphenida—placentals and...
Monotremata species by family Kingdom Animalia Phylum Chordata Class Mammalia (unranked) Australosphenida Tachyglossidae (Echidnas) Ornithorhynchidae Category...
techniques: egg-laying mammals (yinotherians or monotremes - see also Australosphenida), and mammals which give live birth (therians). The latter subclass...
Monotremata species by family Kingdom Animalia Phylum Chordata Class Mammalia (unranked) Australosphenida Tachyglossidae (Echidnas) Ornithorhynchidae Category...
likely a specialist on colonial insects, similarly to living anteaters. Australosphenida, a group of mammals possibly related to living monotremes, first appeared...
Monotremata species by family Kingdom Animalia Phylum Chordata Class Mammalia (unranked) Australosphenida Tachyglossidae (Echidnas) Ornithorhynchidae Category...
Asfaltomylos is an extinct genus of the primitive mammal subclass Australosphenida from the Jurassic of Argentina. The type and only species is Asfaltomylos...
has been placed in the family Shuotheriidae as a sister taxon of the Australosphenida (see, Yinotheria), making it a relative of modern monotremes. However...
Monotremata species by family Kingdom Animalia Phylum Chordata Class Mammalia (unranked) Australosphenida Tachyglossidae (Echidnas) Ornithorhynchidae Category...
affinities have differed; one proposal places it in a group known as Australosphenida with other Mesozoic tribosphenic mammals from the southern continents...
occlusion of molars and the presence of a well-developed masseteric fossa. Australosphenida - a clade that contains monotremes and their fossil relatives. These...
related to monotremes and hence the two form the yinotherian clade Australosphenida. It includes two species, Ausktribosphenos nyktos and Bishops whitmorei...
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