- sides, only to open
dorsally through the
adductor fossa.: 44
mesethmoid The
mesethmoid is a bone in the
anterior part of the braincase. It is located...
- the rear and
lower parts of the skull. In
skulls viewed from above, a
mesethmoid bone may be
visible in some species,
wedging into the
midline of the skull...
- at its
caudal end, and like in some Otocephala, the
caudal part of the
mesethmoid appears compressed when seen from above. As in many
other teleosts, the...
- midline, the
rostropterygoid process had a
support at its base and the
mesethmoid bone had a deep
depression for the
caudal concha, just as in waterfowl...
-
under bone.
Other diagnostic characters are
absence of
temporal fossae,
mesethmoid not
being exposed dorsally,
presence of
splenial teeth,
secondary grooves...
- and the
rostrum is long. The
presence of a
cavity between nasals and
mesethmoid on the
posterior wall of the bony
nares that
distinguishes this taxon...
-
mochokid catfishes diagnosed by the
following synapomorphies: a
narrow mesethmoid, lack of free
orbital margin,
transverse ventral fold of branchiostegal...
-
preserved braincase is very much complete, only
missing the sphenethmoid-
mesethmoid complex,
whereas the
laterosphenoids and
orbitosphenoids are incompletely...
