-
basisphenoid bone of the
lower braincase,
forming a bone
known as the
parabasisphenoid.
Early mammals have a
small parasphenoid, but for the most part its...
-
basisphenoid are
fused into a
single bone, the
parabasisphenoid. The
front part of the
parabasisphenoid is a blade-like structure, the
cultriform process...
- position. The
suture between parabasisphenoid and
basioccipital was straight. It is
probable that the
parabasisphenoid was in
contact with the prootic...
- of
characteristics including,
among others, an
inflated braincase (
parabasisphenoid) and a long, low
opening in the
upper jaw (the
maxillary fenestra)...
- and are not elongate.
Scutarx deltatylus also
possess deep,
round parabasisphenoid recess, a
trait apomorphic to this taxon. In both the
anterior and...
-
transverse ridge,
similar to
allokotosaurs and archosauriforms. The
parabasisphenoid (front
lower component) is less specialized; it lies flat and tapers...
- the
basioccipital connects to the
parabasisphenoid bone,
which forms the base of the braincase. The
parabasisphenoid is
unusually narrow in Elginia, tapering...
-
surface of the
basioccipital and
extends onto the
prootic and the
parabasisphenoid, a deep
recess is
present on
posterodorsal base of the paroccipital...
- standards,
though the
opening for the
abducens nerve p****es
through the
parabasisphenoid bone (at the
lower front part of the braincase),
rather than the prootic...
-
basioccipital has a V-shaped (rather than U-shaped)
contact with the
parabasisphenoid, and the
paroccipital processes are
larger in
Gnathovorax compared...
