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gastraea
Wikipedia English The Free EncyclopediaDownload this dictionary
Urmetazoan
The Urmetazoan is the hypothetical last common ancestor of all animals. It was undoubtedly marine, but beyond this its form is difficult to determine; five different hypotheses have been put forward, and discriminating between them is difficult because the relationships of animal phyla are not completely resolved.

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Farsi dictionaryDownload this dictionary
gastraea
)gastrula()gastrea(رويان کيسه اى شکل ابتدايى که از دو قشر سلول تشکيل يافته

MHM Advanced English > Persian (v. 90)Download this dictionary
gastraea
(= gastrula , gastrea)
رويان کيسه اى شکل ابتدايى که از دو قشر سلول تشکيل يافته

Webster's Revised Unabridged Dictionary (1913)Download this dictionary
Gastraea
(n.)
A primeval larval form; a double-walled sac from which, according to the hypothesis of Haeckel, man and all other animals, that in the first stages of their individual evolution pass through a two-layered structural stage, or gastrula form, must have descended. This idea constitutes the Gastraea theory of Haeckel. See Gastrula.
  

Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. About
Free English-Vietnamese DictionaryDownload this dictionary
gastraea
gastraea
  • danh từ
    • động vật dạng phôi dạ (phôi vi trùng)
      • cũng gastrea
      • danh từ
        • động vật dạng phôi dạ (phôi vi trùng)
          • cũng gastrea

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