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sphaeractinoidea
释义
Sphaeractinoidea
Sphaeractinoidea
[
sfir‚ak·tə′nȯid·ē·ə
]
(paleontology)
An extinct group of fossil marine hydrozoans distinguished in part by the relative prominence of either vertical or horizontal trabeculae and by the presence of long, tabulate tubes called autotubes.
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更新时间:2025/3/17 23:09:44