“microsiphonula”的英文意思_释义_用法

单词

microsiphonula

释义

‖ microsiphonula Zool.|maɪkrəsɪˈfəʊnjʊlə|
[mod.L. dim. of prec.: see -ule.]
A larval stage in certain Cephalopods, when the microsiphon begins. Hence microsiˈphonular a., of or pertaining to the microsiphonula stage. microsiˈphonulate a., having a microsiphonula stage. microsiphonuˈlation, the formation of the microsiphonula stage.
1887Hyatt in Proc. Bost. Soc. Nat. Hist. XXIII. 401 This was the beginning of the small siphon and can be appropriately termed the Microsiphonula. The microsiphonula was the typical stage of nearly all the known genera of Nautiloids.Ibid. 402 These organs entirely disappeared in the true microsiphonulate forms.Ibid., Sannionites was a genus in which the siphon was smaller than in Endoceras, and probably..inherited the tendency to microsiphonulation at the first septum at an earlier age than in Endoceras.

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