单词 | blastoid |
释义 | blastoidadj.n. A. adj. Of or belonging to the Blastoidea, a group of fossil echinoderms. ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Echinodermata > [adjective] > belonging to or characteristic of Pelmatozoa > of or belonging to Blastoidea blastoid1876 1876 Q. Jrnl. Geol. Soc. 32 112 The Blastoid affinities of Astrocrinites (= Zygocrinus) have been pointed out. 1962 D. Nichols Echinoderms xii. 149 The steganoblastidae are superficially blastoid-like. B. n. An echinoderm of this group. ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Echinodermata > [noun] > division Pelmatozoa > member of class Blastoidea blastid1877 blastoid1882 1882 A. Geikie 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. 1914 Brit. Mus.: Return 202 in Parl. Papers (H.C. 186) LXXI. 193 Newly-described Blastoids from Somerset. 1962 D. Nichols Echinoderms viii. 96 Tubercles have not been found in cystoids, blastoids and heterosteles. This entry has not yet been fully updated (first published 1933; most recently modified version published online March 2018). < adj.n.1876 |
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