Crossopterygii

1
总鳍鱼亚纲
总鳍鱼亚纲(Crossopterygii) 是出现于泥盆纪, 总鳍鱼亚纲(Crossopterygii):是出现于泥盆纪, 繁盛于古生代和中生代的原始硬骨鱼.
2
总鳍鱼类
鱼石螈的骨骼构造，既有总鳍鱼类(Crossopterygii)的特征，又有原始两栖类的特征，是脊椎动物从水到陆过渡阶段的代表。
3
总鳍亚纲
总鳍亚纲（Crossopterygii）：偶鳍为带鳞的肉叶，内部骨骼的排列与陆生脊椎动物肢骨的排列极为近似，是动物界“活化石”之一，如矛尾鱼（Latimeriachalumna...
4
总鳍鱼
两栖动物可能起源于泥盆纪(大约距今三亿多年)，由古总鳍鱼(Crossopterygii)之真掌鳍鱼(Eusthenopteron)进化而来的。

1
Crossopterygii; most known only in fossil form.
总鳍目的鱼；大多仅知为化石形式存在。
2
Bony fishes of the southern hemisphere that breathe by a modified air bladder as well as gills; sometimes classified as an order of crossopterygii.
用气泡或腮呼吸生活于南半球的多骨鱼类；有时被归为总鳍鱼类。

Crossopterygii
The Sarcopterygii /ˌsɑrkɒptəˈrɪdʒi.aɪ/ or lobe-finned fish (from Greek σαρξ sarx, flesh, and πτερυξ pteryx, fin) – sometimes considered synonymous with Crossopterygii ("fringe-finned fish", from Greek κροσσός krossos, fringe) – constitute a clade (traditionally a class or subclass) of the bony fish, though a strict cladistic view includes the terrestrial vertebrates. The living sarcopterygians are the coelacanths, lungfish, and the tetrapods.

点击反馈