-
tubes are the
apical actines of the
tetractines. ****ules are
equiangular and
equiradiate triactines,
tetractines, and tripods.
Triactines are the most...
-
comprises three kinds of ****ule: triactines,
tetractines and tripods. The
triactines and
tetractines are
equiradiate and equiangular, with
conical actines...
- and
tetractines on the tubes’ interior, and
tripods and
tetrapods on the
exterior delimiting the cormus. The
actines of the
triactines and
tetractines are...
-
skeleton consists of a
tangential layer of
triactines and
another of
tetractines. This
species can be
distinguished from the
rather similar Sycon raph****...
-
Large triactines and a few
large tetractines occur in the choanosome.
Approximately a
third of the
small tetractines have
three rows of
spines along the...
- two-tipped diactines,
triactines with
three ****ules rays, and four-ra****
tetractines.
Specialized cells, the sclerocytes,
produce these ****ules, and only...
-
special organisation, and it
comprises triactines,
tetractines and tripods.
Triactines and
tetractines are
equiangular and equiradiate;
their actines are...
-
triactines and
tetractines.
Actines are conical,
slightly undulated at the
distal part, and with a
sharp tip. The
apical actine of the
tetractines is shorter...
-
island of
Menorca where the type
specimen was discovered.
Triactines and
tetractines are
regular (equiangular and equiradiate) and are the same size. The...
-
regular (equiangular and equiradiate) triactines,
tetractines and tripods. The
apical actine of the
tetractines has spines.
Aquiferous system asconoid. Borojevia...
