有判断力
发表于 2025-3-21 17:24:52
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爱哭
发表于 2025-3-21 23:37:16
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DIS
发表于 2025-3-22 01:37:29
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INTER
发表于 2025-3-22 06:01:31
https://doi.org/10.1007/978-3-319-32570-5tarpons are powerful swimmers, much prized as sport fish, particularly in the Atlantic. These silvery fish with large scales contrast sharply with the eels in which the body is much elongated and naked or covered with very small scales.
现实
发表于 2025-3-22 09:33:49
Jawed Fishes, important step forward achieved in the evolution of jaws and hence the division of the vertebrates into Agnatha and Gnathostomata. The alternative would be fish-like forms (Pisces) and four-footed vertebrates (Tetrapoda).
让步
发表于 2025-3-22 13:02:58
Lung-fishes & Bichirs,es, the coelacanth and the bichirs. Related to the coelacanths were the Rhipidistia, the only fishes to have true internal nostrils, and an internal fin skeleton very similar to that of the limb of a tetrapod. They were common in the Devonian and persisted into the Carboniferous, and gave rise to the land vertebrates.
让步
发表于 2025-3-22 19:54:45
Sturgeons, Gar-pikes & Bowfin,is is an immensely successful group and such is its diversity that classification poses problems. The scheme adopted here represents, with very minor modifications, some of the more recent attempts to clarify actinopterygian relationships, although it is certainly not the final statement, and much taxonomic work remains to be done.
某人
发表于 2025-3-23 00:58:34
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Sputum
发表于 2025-3-23 01:30:22
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直觉没有
发表于 2025-3-23 09:15:18
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