| 单词 |
phoronid |
| 释义 |
phoronid, n. (and a.) Zool.|ˈfɒrənɪd|
[f. mod.L. Phoronida, f. Phoronis: see -id3.]
Any coelomate marine worm of the phylum Phoronida (orig. considered to include only the genus Phoronis), characterized by a horseshoe-shaped lophophore. Also attrib. or as adj., esp. as phoronid worm.
1926A. H. Clark Animals Land & Sea 240 (caption) Two sponges and a phoronid. 1934in Webster s.v. Phoronis, Phoronid, n. & adj. 1935Twenhofel & 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. 1964Oceanogr. & Marine Biol. II. 480 Similar studies..have been done on the larvae of oysters.., on a number of species of bryozoa.., on phoronid worms.., and a number of species of polychaete worms. 1977P. & J. Medawar Life Sci. ii. 25 Echinoderms, including sea urchins, starfish and sea cucumbers, phoronids, sea-arrows and the large group known as sea-squirts. 1982Symposia Soc. Exper. Biol. XXXV. 510 Spermatozoa from the phoronids are aberrant with a hairpin bend in their axis. |
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