The internal ventral or oral disk of a hydrozoan; the concave muscular layer beneath the umbrella of a medusa or jellyfish.
| 单词 | θ32080 |
| 释义 | the world > animals > invertebrates > subkingdom Metazoa > grade Diploblastica > phylum Coelenterata > [noun] > class Hydrozoa > member of > disk (1) subumbrella1844 The internal ventral or oral disk of a hydrozoan; the concave muscular layer beneath the umbrella of a medusa or jellyfish. |
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