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1
Sponges of the New Caledonian Lagoon
Number of rays (actinesl: monactinal spicules have one ray with asymmetrical
ends (i.e. the spicule is secreted by one or more cells commencing at one end
and finishing at anotherl: diactinal spicules have two rays, with symmetrical ends
iie ...
2
New Zealand Journal of Zoology
... of some species of Halichondria, and they have simple monactinal spicules.
The diagnosis of order Halichondrida depends primarily on simple monactinal or
diactinal spiculation and a disordered skeletal arrangement except at the surface.
3
Chemical Zoology V2: Porifera, Coelenterata, And Platyhelminthes
The megascleres are monactinal or diactinal monaxons. Among the
Clavaxinellidae are included the Hadromerina, of which one type is the genus
Tethya (the sea orange). This is a globular sponge whose organization
resembles that of the ...
4
Modern Text Book of Zoology: Invertebrates
1-Monactinal monaxon. 2-Diactinal monaxon 3 -Curved monaxon. 4-Triaenes. 5
& 6-Tetraxon calthrops. 7-Triradiate. 8 -Monaxon with ends hooked (anphidisc). 9
-Hexactinal triaxon. 10 & 11-Potyaxons. 12-Spongin fibres. marketable size in ...
5
Intertidal Invertebrates of the Central California Coast
If growth occurs in a single direction, the spicule is a monactinal monaxon (fig. 3,
a-d); if in both directions, it is a diactinal monaxon (fig. 3, e-i). Both monactines
and diactines (the latter also called rhabds) are usually megascleres, but in some
...
Sol Felty Light, Ralph Ingram Smith, 1954
Monactinal Diactinal Curved Monaxon with Tctraxon monaxon monaxon
monaxon hook ends Triradiate Calthrops Hcxactinal g triaxon Polyaxon Polyaxon
Figure 4.7 Spicules and spongin. Spiculc {a 0 End of . ' iculc Sclcroblast 5p
Founder ...
7
A Dictionary for Invertebrate Zoology:
[Gr. strongylos, rounded; oxys, sharp] (PORIF) A monactinal megasclere with one
end rounded and the other pointed. strophe n. [Gr. strophos, twisted] (ARTHRO:
Insecta) In males of higher Diptera, spiral curling of parts of the postabdo- men ...
8
The Marine Fauna of New Zealand: Porifera, Demospongiae, ...
Genera of this family have monactinal choanosomal megascleres and
monactinal echinating spicules. The Myxillidae previously has included only
sponges with diactinal ecto- somal megascleres. In this study the genera Allocia
and Antho, ...
Patricia R. Bergquist, P. J. Fromont, 1988
9
A Student's Text-book of Zoology: Protozoa to Chaetognatha
Sub-fam. 2. Gelliinae. Megascleres all diactinal, oxea, or strongyla, Microsclera
as sigmata or toxa ; no rind or fistulse. Gellius Gray ; Gtlliodcs Ridley ;
ToxocJuilinn Ridley. Sub-fam. 3. Tedaniinse. Megascleres of two forms —
monactinal (styli) ...
Adam Sedgwick, Joseph Jackson Lister, Sir Arthur Everett Shipley, 1808
Family Myxillidae Topsent Sponges with a regular, reticulate skeleton of
monactinal megascleres which are styles and acanthostyles to which echinating
acanthostyles may be added (Fig. 1.8e, p. 46). The dermal spicules are diactinal
and the ...
Patricia R. Bergquist, 1978
