Last Updated：2022/12/24
Given the relative size of the specimens, the level of coossification between the quadrate and quadratojugal and the development of dorsal and mandibular condyles, it is assumed that Morphotype 1 includes quadrates belonging to juvenile, immature, sub-adult and adult individuals, so that a sequence list of ontogenetic character transformations (maturity-dependent characters) can be provided for the quadrate of Spinosaurus aegyptiacus.
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Given
the
relative
size
of
the
specimens,
the
level
of
coossification
between
the
quadrate
and
quadratojugal
and
the
development
of
dorsal
and
mandibular
condyles,
it
is
assumed
that
Morphotype
1
includes
quadrates
belonging
to
juvenile,
immature,
sub-adult
and
adult
individuals,
so
that
a
sequence
list
of
ontogenetic
character
transformations
(maturity-dependent
characters)
can
be
provided
for
the
quadrate
of
Spinosaurus
aegyptiacus.
