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单词 natant
释义

natant

/ˈneɪt(ə)nt /
adjective technical or literary
Swimming or floating.Previously unstudied and earlier-known specimens have revealed the wide cephalic doublure and median ventral suture in Stenopilus; the hypostome is unknown but was probably natant....
  • It is likely that the primitive sister group of the Asaphida was a member of Ptychopariida with a natant hypostomal condition: derived members are either conterminant or impendent.
  • Since two of the primitive calymenides, Pharostomina and Bavarilla, had natant hypostomes it seems very likely that the Cambrian sister taxon would also be natant.

Origin

Mid 18th century: from Latin natant- 'swimming', from the verb natare.

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更新时间:2025/3/23 6:41:39