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| | PseudocnellaThandar, 1987 4 species Small to medium sized, usually barrel shaped species, up to 95 mm long along the ventral surface, mouth and anus directed dorsally. Tentacles 10, of more or less equal size, occasionally one or two reduced. Pedicels usually restricted to ambulacra, 2-7 rows ventrally and 2-6 rows dorsally; numerous interradial papillae (papulae). Calcareous ring simple, without posterior prolongations to radial plates but both radial and interradial plates with long anterior projections. Spicules of the body wall a superficial layer of incomplete baskets, developed as cross shaped rods with dichotomously branched arms, and an inner dense layer of round to oval, usually fir cone shaped, knobbed plates made up of more than one layer of calcareous material; in one species (P. sykion) baskets present in juveniles only, while in another (P. insolens), buttons present in addition to knobbed plates. (Thandar, 1987) |
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