- The
ectotympanic, or tympani****, is a bony
structure found in all mammals,
located on the
tympanic part of the
temporal bone,
which holds the tympanic...
-
preserves an
ectotympanic bone of the
middle ear, a
delicate bone
which is
rarely preserved in
Mesozoic mammal fossils. The
ectotympanic is horseshoe-shaped...
- catarrhines, they face downward.
Other distinctions include both a
tubular ectotympanic (ear bone), and eight, not twelve,
premolars in catarrhines,
giving them...
-
advanced frontal sinus found in
living catarrhines. However, it had a bony
ectotympanic and
teeth comparable to
those of
living catarrhines. Its
discovery provided...
-
large cavity in the
ectotympanic,
which holds the
eardrum in place. The
pacarana has
several small cavities (sinuses) in the
ectotympanic, so it may be that...
-
prehensile tails, and have flat
fingernails and toenails, a
tubular ectotympanic (ear bone), and eight, not 12, premolars,
giving them a
dental formula...
-
elongate ectotympanics. The
ectotympanics of all archaeocetes, nonetheless, are much
different than
those of
terrestrial mammals. The
ectotympanics of all...
- only in
cetaceans (namely, the
large auditory bulla is
formed from the
ectotympanic bone only). It was
recognized as the
earliest member of the
family ****cetidae...
-
recognised the ear
structure of the
auditory bulla,
formed from the
ectotympanic bone in a
shape which is
highly distinctive,
found only in the skulls...
-
neomorphic element of the
mammalian skull. The
entotympanic contacts the
ectotympanic, with
which it
makes up the
auditory bulla. Maier,
Wolfgang (August 2013)...
