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2025-12-25

“blastoid”的英文意思

单词 blastoid
释义 blastoid, a. and n.|ˈblæstɔɪd|
[f. mod.L. Blastoidea, f. Gr. βλαστός sprout, germ + εἶδος form: see blasto- and -oid.]
A. adj. Of or belonging to the Blastoidea, a group of fossil echinoderms.
B. n. An echinoderm of this group.
1876Q. Jrnl. Geol. Soc. XXXII. 112 The Blastoid affinities of Astrocrinites (= Zygocrinus) have been pointed out.1882Geikie Text-bk. Geol. iv. ii. 722 The blastoids or pentremites, which now took the place in the Carboniferous waters that in Silurian times had been filled by the Cystideans.1914Brit. Mus. Return 202 Newly-described Blastoids from Somerset.1962D. Nichols Echinoderms viii. 96 Tubercles have not been found in cystoids, blastoids and heterosteles.Ibid. xii. 149 The steganoblastidae are superficially blastoid-like.
“blastoid”的英文意思

　

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