- (Rhabdinopora, Staurograptus),
triradiate (Anisograptus, Triograptus), or
biradiate (Adelograptus, Kiaerograptus). List of
genera from
Maletz (2014): †Adelograptus...
-
polar axis, they are
biradiate (with two
planes of symmetry) or
pluriradiate (with more than two
planes of symmetry).
Biradiate individuals have long...
-
Depending on the number, the
vanes display pentaradiate,
tetra radiate, or
biradiate symmetries. The
vanes give C. lyra its harp-like
structure and
these are...
- the two
genera being the
number of
planes of symmetry:
Arthrodesmus was
biradiate (having two
planes of symmetry),
while Staurastrum included species with...
-
constriction (isthmus)
where the two
halves (semicells) meet.
Cells are
biradiate,
omniradiate or
rarely triradiate in
cross section. The cell wall has...
- cell wall is
generally smooth but may have
pores or granules.
Cells are
biradiate or
triradiate in
apical view, and is
divided into two
halves called semicells;...
- worldwide.
Sphaerozosma consists of
cells which are
flattened (and thus
biradiate in
apical view); the
cells are
attached end-to-end to form
short or long...
-
consists of two halves. In
apical view, the
cells may be
compressed (
biradiate), three- or multi-angular (tri- or multiradiate), or
circular (omniradiate)...
