- and zhangheotheriids.
There are some
symmetrodonts with acutely-triangulated
molar cusps (“acute-angled
symmetrodonts”) that seem to form a true monophyletic...
- shuotheriids, australosphenidans, eutriconodonts, multituberculates,
symmetrodonts,
dryolestids and
boreosphenidans but
mostly remain small.
First birds...
- 1997 description. The
specific name is
Latin for "five-cusped teeth". "
Symmetrodonts" and
other archaic mammals such as
multituberculates and monotremes...
-
fossil mammals from the
Mesozoic Era. It
includes both the
extinct symmetrodonts and the
living Cladotheria.
Trechnotheria has been ****igned various...
- late-surviving
symmetrodont mammal. This
would still infer a
ghost lineage for
symmetrodonts, but a more
plausible one, as
symmetrodonts persisted into...
-
extinct group of
Mesozoic mammals called symmetrodonts.
Though little is
known about this group, the
symmetrodonts have
several similarities - specifically...
-
derived traits (apomorphies).
Their teeth differed from
those of the "
symmetrodonts" by the
evolution of a
talonid shelf (hypoflexid) on the
lower molars...
-
certain Late Tri****ic "
symmetrodonts", such as
Delsatia and
Woutersia (from the Norian-Rhaetian of France).
These "
symmetrodonts" have
three major cusps...
- 'Symmetrodonta',
though now
generally considered more
basal than true
symmetrodonts. All
members of
Kuehneotheriidae which have been
found so far are represented...
-
Zhangheotheriidae is a
possibly paraphyletic family of "
symmetrodont"
mammals that is
currently known from
Early Cretaceous deposits in
China and Russia...
