-
surface plankton during the
early Ordovician.
Anisograptids can be
quadriradiate (Rhabdinopora, Staurograptus),
triradiate (Anisograptus, Triograptus)...
-
Monograph of the Ascons.--I. On the
Origin and
Growth of the
Triradiate and
Quadriradiate ****ules in the
Family Clathrinidæ".
Journal of Cell
Science (160):...
-
large and
small quadriradiates, and oxea. The tri- and
quadriradiates are
arranged in a few
layers in the
sponge wall. The
quadriradiates are more numerous...
-
found many
specimens with one
biradiate semicell and
another tri- or
quadriradiate semicell. As
these cells could not
soundly be
placed into one genus...
- in the
walls of ascon-tubes. In
addition to the triradiates, a few
quadriradiates can
occasionally be found. The
triradiates are
regular with straight...
- pale grey.
There are
three kinds of ****ules:
regular triradiates,
quadriradiates and very slender, hair-like oxea. The
regular triradiates have rather...
-
Monograph of the Ascons.--I. On the
Origin and
Growth of the
Triradiate and
Quadriradiate ****ules in the
Family Clathrinidæ
Journal of Cell
Science 1898 s2-40:...
-
usual pores. ****ules of two kinds, viz.
acerate and triradiate ; no
quadriradiates : — 1, acerates, of
three forms, viz. that
usually composing the peristome...
- pale grey.
There are
three kinds of ****ules:
regular triradiates,
quadriradiates and very slender, hair-like oxea. The
regular triradiates have rather...
