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单词 archaeogastropod
释义

archaeogastropodn.

Brit. /ˌɑːkɪə(ʊ)ˈɡastrəpɒd/, U.S. /ˌɑrkiəˈɡæstrəˌpɑd/
Forms: 1900s– archaeogastropod, 1900s– archeogastropod.
Origin: Formed within English, by compounding; modelled on a Latin lexical item. Etymons: archaeo- comb. form, gasteropod n.
Etymology: < archaeo- comb. form + gasteropod n., after scientific Latin Archaeogastropoda, order name (J. Berlin in W. Kükenthal & T. Krumbach Handb. der Zool. (1925) V. i. 74).
Zoology.
Any of various chiefly marine gastropod molluscs constituting the prosobranch order Archaeogastropoda, which show several primitive characteristics and comprise many sea snails, limpets, abalones, and related forms.These are now generally regarded as paraphyletic and recent classifications place them in various subclasses.
ΘΚΠ
the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > class Gastropoda > [noun] > other types of gastropod mollusc
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archaeogastropod1955
1955 J. E. Morton in Philos. Trans. (Royal Soc.) B. 239 151 In the majority of living archaeogastropods..a prominent, sometimes spirally coiled caecum was developed.
1975 Nature 15 May 233/1 Calcified eggs have also been reported from land archaeogastropods and from some of those mesogastropods which deposit their eggs on land.
2012 J. Frýda in J. A. Talent Earth & Life ii. 425/1 The euomphalomorph protoconch is not deformed during late embryonic stages to a spiral coil, as is typical in fossil and living archaeogastropods.
This is a new entry (OED Third Edition, September 2016; most recently modified version published online December 2021).
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n.1955
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