-
independently from
those of Tribosphenida, this has been disputed.
Fossils of
australosphenidans have been
found from the Jur****ic of
Madagascar and Argentina, and...
- plus monotremes, or that
monotremes are not
australosphenidans and that the
remaining australosphenidans are
related to placentals.
Ambondro mahabo was...
- most
primitive monotreme differed substantially from non-monotreme
australosphenidans in
having five
molars as
opposed to the
three present in non-monotreme...
- the
dominant land vertebrates.
Mammals diversify into shuotheriids,
australosphenidans, eutriconodonts, multituberculates, symmetrodonts,
dryolestids and...
-
Ausktribosphenidae is an
extinct family of
australosphenidan mammals from the
Early Cretaceous of
Australia and mid
Cretaceous of
South America. Ausktribosphenidae...
-
Henosferus is an
extinct genus of
australosphenidan mammal from
Lower Jur****ic of Argentina. The only
recorded species,
Henosferus molus, was
found in...
-
suggest shuotheres are
closer to
therians than to monotremes, or that
australosphenidans and
therians are more
closely related to each
other than
either are...
-
mammal groups have been
found to have
tribosphenic molars, such as the
australosphenidans (a
group that
includes the
still extant monotremes),
suggesting that...
-
paleontologists argue that it
developed independently in
monotremes (from
australosphenidans),
rather than
being inherited from a
common ancestor that they share...
- that the
triangular array of
cusps may have
evolved independently in
australosphenidans and therians. The
Australosphenida hypothesis remains controversial...
