-
group of
smaller "
postdentary"
bones near the jaw joint. As the
dentary increased in size over
million of years, two of
these postdentary bones, the articular...
- The
postdentary trough is a
skeletal feature seen in
Mesozoic mammals. It is
found on the
inside of the
lower jaw (dentary), at the back
behind the molar...
-
retained one of
their postdentary bones: the articular.
There is a
trough at the back of the jaw on the
inside (lingual)
where the
postdentary bones sat. The...
- end of the dentary,
there was a
depression known as the
postdentary trough,
where the
postdentary bones (homologous to some of the
middle ear
bones of modern...
- to
other known crown mammals, they
retained postdentary bones as
shown by the
presence of a
postdentary trough. The
extant members (monotremes) developed...
- apparatus, and
reduced postdentary jaw
bones which are
beginning to
develop into
middle ear ossicles. On the
other hand, the
postdentary bones are
still attached...
- boreosphenidans, the
mandibular angle is
placed posteriorly and the
primitive postdentary trough (hole in the mandible) is
absent (in
contrast to Kuehneotheriidae...
-
supported by
cartilage or
ligaments instead of bone. If correct, then the
postdentary bones (which in
early mammals form the
middle ear bones)
would have needed...
-
mammals and some
fossil relatives. It is
characterized by the loss of a
postdentary trough and a
widened braincase. †Hadrocodium †Kuehneotherium Crown-group...
-
occurred in two steps. A
partial middle ear
formed by the
departure of
postdentary bones from the dentary, and
happened independently in the
ancestors of...
