-
There are two well-developed
spines on the
sphenotic bone and one on the
epiotic bone.
There is a
single spine on the
joint at the
front of the jaw joint...
- (pterotic)
roofs in the
tympanic cavity and antrum;
while the
fourth (
epiotic)
appears near the
posterior semicircular canal and
extends to form the...
- ear of
birds and mammals. It is
formed from the
fusion of the prootic,
epiotic, and
opisthotic bones, and in
Cetacea forms a
complex with the tympanic...
- the tip not
being turned inwards. The dome like
supraocciptal stops the
epiotic bones from
meeting on the
upper surface of the skull, they also have a...
- elements, a full
complement of
tympanic recesses, and the
presence of an
epiotic. Of this material, only the
quadrate and
orbital roof, in
addition to limited...
- a
spine on the preoperculum. They also have no
spines on the frontal,
epiotic, and
posttemporal bones and a
smaller number of teeth, 6 to 26 premaxillary...
