英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字，中文词皆可：


请选择你想看的字典辞典：
单词字典翻译
Chondrostei查看　Chondrostei　在百度字典中的解释百度英翻中〔查看〕
Chondrostei查看　Chondrostei　在Google字典中的解释Google英翻中〔查看〕
Chondrostei查看　Chondrostei　在Yahoo字典中的解释Yahoo英翻中〔查看〕

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Chondrostei - Wikipedia
    Chondrostei is a subclass of non- neopterygian ray-finned fish While the term originally referred to the paraphyletic grouping of all non-neopterygian ray-finned fish, it was redefined by Patterson in 1982 to be a clade comprising the Acipenseriformes (which includes sturgeon and paddlefish) and their extinct relatives
  • Chondrostean | Characteristics Facts | Britannica
    chondrostean, (subclass Chondrostei), any of approximately 30 species of primitive ray-finned bony fishes that inhabit marine and freshwater environments of North America and Eurasia
  • Chondrostei - Simple English Wikipedia, the free encyclopedia
    The Chondrostei[1] are a sub-class of ray-finned fish, the Actinopterygii They include the sturgeons, huge fish which provide caviar The Chondrostei are mainly cartilaginous fish with some ossification There are 52 species divided among two orders
  • Chondrostean - an overview | ScienceDirect Topics
    CHONDROSTEANS Chondrostean fishes (class Osteichthyes, subclass Actinopterygii, infraclass Chondrostei) were the dominant forms of bony fishes in the Permian but, like the lungfishes, have subsequently declined to a few small genera
  • Introduction to the Chondrostei
    Two chondrostean lineages survive today: the sturgeons of Eurasia and North America, and the paddlefish (shown here) of North America and China
  • Chondrostean Fishes | SpringerLink
    The present chapter is devoted to the Chondrostei, which are generally considered the most primitive and the most ancient of these three groups This superorder contains 25 extant species arranged in two families: the sturgeons (or Acipenseridae) and the paddlefishes (or Polyodontidae)
  • Chondrostei - The Fish Tree of Life
    Taxonomy and phylogeny of Chondrostei, a subclass of ray-finned fishes Based on the Phylogenetic Fish Classification Also includes species checklists, fossil calibrations, DNA sequences
  • Chondrostei - Encyclopedia. com
    Chondrostei (chondrostean fish) Group of bony fish belonging to the subclass Actinopterygii Often ranked as a super-order, the chondrosteans have a partly cartilaginous skeleton (see CARTILAGE), a heterocercal tail, a spiracle, and an intestinal spiral valve
  • Evolution, Cartilaginous Fish, Ray-Finned Fish - Britannica
    Chondrosteans are thought to be the most primitive of the ray-finned fishes They were most numerous and possessed the greatest diversity during the last part of the Paleozoic Era and the beginning of the Mesozoic Era (some 252 million years ago)
  • Paddlefishes (Subclass Chondrostei) · iNaturalist
    Chondrostei are primarily cartilaginous fish showing some degree of ossification It is thought that the cartilaginous condition is derived, and that the ancestors of this group were bony fish with fully ossified skeletons Members of this group share with the Elasmobranchii certain features such as the possession of spiracles, a heterocercal





中文字典-英文字典  2005-2009