Peculiar asteroid spicules, resembling two toothed wheels united by an axle, which form a layer surrounding the gemmules of sponges. (Nicholson.)
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| 释义 | the world > animals > invertebrates > subkingdom Parazoa > phylum Porifera > [noun] > member of > parts of > sponge spicule > wheel-shaped (2) amphidisc1867 Peculiar asteroid spicules, resembling two toothed wheels united by an axle, which form a layer surrounding the gemmules of sponges. (Nicholson.) wheel-spicule1877 one of certain disk-shaped calcareous concretions, with an appearance of radiating spokes, in the skin of some holothurians; also, a wheel-shaped… |
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