- 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...
-
derived traits (apomorphies).
Their teeth differed from
those of the "
symmetrodonts" by the
evolution of a
talonid shelf (hypoflexid) on the
lower molars...
- 1997 description. The
specific name is
Latin for "five-cusped teeth". "
Symmetrodonts" and
other archaic mammals such as
multituberculates and monotremes...
- cynodont); 3,
Microconodon (a Tri****ic eucynodont); 4,
Spalacotherium (a
Cretaceous "
symmetrodont"); 5,
Amphitherium (a Jur****ic
prototribosphenid mammal)...
-
fossil mammals from the
Mesozoic Era. It
includes both the
extinct symmetrodonts and the
living Cladotheria.
Trechnotheria has been ****igned various...
-
early mammals such as
docodonts (like Docodon), multituberculates,
symmetrodonts, and triconodonts.
Dinosaurs that
lived alongside Stegosaurus included...
- "
symmetrodonts", such as
Delsatia and
Woutersia (from the Norian-Rhaetian of France) and
Tikitherium (from the
Carnian of India).
These "
symmetrodonts"...
- in this region, such as Fruitafossor, docodonts, multituberculates,
symmetrodonts, and triconodonts. The
flora of the
period has been
revealed by fossils...
- the birds,
appears in the
fossil record,
along with
triconodontid and
symmetrodont mammals.
Diversity in
stegosaurian and
theropod dinosaurs. 131 Ma First...
