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Definition: Essentially tubular organisation; a continuous choanoderm lines all internal
cavities; spicules are regular triradiates and/or quadriradiates, sometimes with tripods or biradiates;
sponges grow in the form of an individual olynthus, with several olynthi growing from the basal
stolon-like tubes, or in the form of distally branching tubes radially arranged around a central olynthus
tube without any special skeletal differentiation.
Scope: Two genera are included.
Reviews: Nil.
Genera:
Soleniscus Haeckel, 1870 (type species:
Leucosolenia stolonifer Dendy, 1891) - form of an individual erect
olynthus, with several olynthi growing from basal stolon-like tubes (tubular spongorhiza), or in the form
of distally ramified creeping tubes (Borojevic et al., 1990); surface hispid; apical oscules, firm
texture; skeleton of regular to slightly sagittal quadriradiates and oxeas (Burton, 1963).
GBR species:
Soleniscus stolonifer (Dendy, 1891), Soleniscus radovani
Wörheide & Hooper 1999, Dendya Bidder, 1898 (type species:
Clathrina tripodifera Carter, 1886) - Cormus solitary, conical to
ovoid, consisting of a large central tube from which smaller radially arranged tubes branch off; surface
even, reticulate; oscules apical; texture firm; skeleton of regular and tripodal triradiates and sagittal
quadriradiates (Burton, 1963; Borojevic et al., 1990).
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