-
comprises three kinds of ****ule: triactines,
tetractines and tripods. The
triactines and
tetractines are
equiradiate and equiangular, with
conical actines...
- two-tipped diactines,
triactines with
three ****ules rays, and four-ra****
tetractines.
Specialized cells, the sclerocytes,
produce these ****ules, and only...
- and
tetractines on the tubes’ interior, and
tripods and
tetrapods on the
exterior delimiting the cormus. The
actines of the
triactines and
tetractines are...
-
tubes are the
apical actines of the
tetractines. ****ules are
equiangular and
equiradiate triactines,
tetractines, and tripods.
Triactines are the most...
- has triactines, and
tetractines.
Characterized by well-defined
cormus with
tripods on the
external tubes, triactines, and
tetractines with
spines on the...
-
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...
-
restricted to a sieve-like ostia-bearing region. Dagger-shaped
small tetractines (pugioles) are
frequently the sole
skeleton of the
exhalant aquiferous...
-
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...
-
island of Menorca,
where the type
specimen was discovered.
Triactines and
tetractines are
regular (equiangular and equiradiate) and are the same size. The...
- organization,
comprising equiangular and
equiradiate triactines and
tetractines in
roughly the same proportions. They are
similar in size.
Their actines...
