| 释义 |
blastid Palæont.|ˈblæstɪd|
[f. Gr. βλαστ-ός sprout, bud; cf. blastema.]
(See quot.)
1877Le Conte Elem. Geol. (1879) 299 Stemmed Echinoderms, or Crinoids may be divided into three families, viz.: 1. Crinids; 2. Cystids; 3. Blastids. Ibid. 301 Blastids..had a bud-shaped body, with five petalloid spaces..radiating from the top, and reaching half way down the body. |