| 释义 |
clavula|ˈklævjuːlə|
Pl. -æ.
[mod.L. Cf. clavule.]
1. One of the knobbed ciliated setæ or bristles found on the exterior of spatangoid sea-urchins.
1884Sedgwick & Heathcote tr. Claus' Zool., Protozoa to Insecta 296 The fascioles or semitæ..upon which..knobbed bristles with active cilia (clavulæ) are distributed. 1888Rolleston & Jackson Anim. Life 558 Clavulæ, found only in Spatangideæ. 1962D. Nichols Echinoderms viii. 97 This current is largely created by special ciliated spines, clavulae, in the interstices of the marginal plates on the arm-sides.
2. A spicule occurring in certain hexactinellid sponges in the shape of a toothed rod pointed at one end and thickened or knobbed at the other.
1887Encycl. Brit. XXII. 417/2 The clavula, a tylotate form with a toothed margin to the head. |