单词 | phoronid |
释义 | phoronidn.adj. Zoology. A. n. Any of several tube-dwelling, worm-like marine invertebrates which constitute the small lophophorate phylum Phoronida, characterized by a horseshoe-shaped lophophore. ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > [noun] > other types of phoronid1922 1922 Proc. National Acad. Sci. U.S.A. 8 224 Others are quite isolated, like the nemerteans, phoronids, brachiopods, chætognaths and echinoderms. 1959 L. H. Hyman Invertebrates V. xix. 232 All phoronids occupy a cylindrical tube of their own secretion in which they can move freely. 2000 C. Tudge Variety of Life ii. v. 200 The phoronids and the brachiopods seemed to group with the annelids and molluscs, while the Bryozoa emerged as the sister group of all those creatures put together. B. adj. Of or relating to the phylum Phoronida. ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > [adjective] > of other types of phoronid1934 1934 Webster's New Internat. Dict. Eng. Lang. at Phoronis Phoronid, n. & adj. 1935 W. H. Twenhofel & R. R. Shrock Invertebr. Paleontol. v. 137 Burrows known as Scolithus..are especially abundant in Cambrian strata and have long been considered to have been made by worms, but recently these have been interpreted as possible phoronid burrows. 1964 Oceanogr. & Marine Biol. 2 480 Similar studies..have been done on..phoronid worms.., and a number of species of polychaete worms. 1998 L. Margulis & K. V. Schwartz Five Kingdoms (ed. 3) iii. 311/1 In most phoronid species..eggs develop into actinotrochs—ciliated larvae that feed and have larval tentacles. This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022). < n.adj.1922 |
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