- Specimen: AMegascleres: B, D, and E:
hexactines, C: diactin, F:
close view of a
hexactine distal ray, Microscleres:G and H: discohexasters, I and J: codonhexasters...
-
tentoriformis Porifera Hexactinellida "Owing to the
presence of
definite hexactines and
hexactine-derived ****ules,
Sanshapentella can be ****igned to Hexactinellida...
- with
stauractines (cross-like ****ules with four
perpendicular rays) and
hexactines.
Prostalia lateralia (large
protruding ****ules), when present, are monaxons...
- the
sponge body weight.
Hexasterophoran sponges have ****ules
called hexactines that have six rays set at
right angles.
Orders within hexasterophora are...
-
stauractines (four-ra**** ****ules, + shaped),
though pentactine (five-ra****) or
hexactine (six-ra****) ****ules may be
predominant in
certain regions of the skeleton...
-
skeleton consists of diactines,
sometimes together with less
frequent hexactines (****ules with six prongs). A
large variety of
microscleres occur in this...
