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opercular series contains four bone
segments known as the preoperculum,
suboperculum,
interoperculum and operculum. The
preoperculum is a crescent-shaped...
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rugose texture on the
dermatocranium and ch**** bones, the
absence of the
suboperculum and the spiracular, and
reduction or loss of the
descending process of...
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immediately in
front of the main fin.
There is also no
anterior spine in the
suboperculum. In the
males of this
genus the
upper and
lower pairs of
denticular teeth...
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paleonisciformes though it
possessed a expanded,
fixed maxillary along with its
suboperculum being larger than its operculum.
Though not ****ing with the paleoenvironments...
- of
large teeth. The
opercular region is made up of the
operculum and
suboperculum with the
these bones being a
little taller than they are wide. Just like...
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distinguished from
other genera of
Oneirodidae by the long and
slender suboperculum,
which has a
tapering point at its
upper end, and by
having a slightly...
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distinguished from
other genera of
Oneirodidae by the long and
slender suboperculum which has a
tapering point at its
upper end, and by
having a slightly...
- a
large dark
blotch on the
operculum but
there is no dark
blotch on
suboperculum or on the
spiny part of the
dorsal fin. This
species reaches a maximum...
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articular spine.
There is a deep
notch on the rear
opercular margin and the
suboperculum is
short and wide with a
rounded dorsal endand oval
ventral end. The...
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spore discharge in W. americana, such as the ascus, the operculum, the
suboperculum. The spore-bearing cells, the asci, are 330–400 μm long by 16–20 μm wide...
