| 单词 |
symplesiomorphic |
| 释义 |
symplesiomorphic, a. Taxon. Brit. |sɪmˌpliːzɪə(ʊ)ˈmɔːfɪk|, U.S. |sɪmˌplisiəˈmɔrfɪk| [‹ sym- prefix + plesio- comb. form + -morphic comb. form, after symplesiomorphy n.] Of the nature of a symplesiomorphy.
1964Current Anthopol. 5 30 To that end he uses exclusively symplesiomorphic characters, which are unsuitable for the delimitation of a natural taxon or phylon. 2000C. Tudge Variety of Life ii. xvii. 410 Because this character is symplesiomorphic for Reptilia as a whole, it cannot define the subclass. 2002S.J. Gould Struct. Evolutionary Theory vii. 560 Devonian fishes already possessed lungs, for the trait is symplesiomorphic in tetrapods and their aquatic ancestors. |

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