-
occipital bone,
which is
greatly enlarged in humans. The
paired opisthotics (singular:
opisthotic) form most of the rear
lateral part of the braincase, in front...
-
semicircular canal, and
medial wall of the
tympanic cavity. A
second (
opisthotic)
appears at the
promontory on the
medial wall of the
tympanic cavity and...
-
entire opisthotic is only 38 mm long. It is also
compressed anteroposteriorly,
giving it a
flattened shape. The
medial portion of the
opisthotic is also...
- dinosaurs, the
exoccipitals are
fused to the
opisthotic,
forming a
structure also
known as the exoccipital-
opisthotic. Below, the
exoccipitals are
fused to the...
-
which aid in
extension and
flexion of the head and neck. Likewise, the
opisthotic process,
neural spines, and
zygapophyses all
appeared to have been large...
- Liston; Mark
Evans (2003). "The
first relatively complete exoccipital-
opisthotic from the
braincase of the
Callovian pliosaur, Liopleurodon" (PDF). Geological...
-
slender and
splits into two
small prongs where it
contacts the
opisthotic. The
opisthotic merges forwards into the prootic,
which extensively contacts the...
- quadrates, spuamosal, braincases, frontals, parietal, supraoccipital,
opisthotic-exoccipital, prootic, laterosphenoid, parasphenoid-basisphenoid, basioccipital...
- semi-circular
canals are flat,
probably because they were
wedged between the
opisthotic (an
inner ear bone) and
supraoccipital bones. Like many mammals, gorgonopsians...
- and mammals. It is
formed from the
fusion of the prootic, epiotic, and
opisthotic bones, and in
Cetacea forms a
complex with the
tympanic bone. Coues, Elliott...
