Essentials of biology presented in problems. Biology. Sturgeon
Download this stock image: . Essentials of biology presented in problems. Biology. Sturgeon (Acipenser sturio), a ganoid fish. In some members of this group the young are born alive. Sharks, rays, and skates are elasmobranchs. 2. Ganoids. — The bodies of these are ganoids protected by a series of platehke scales of considerable strength. These fishes are the only rem- nant of what onop was the most powerful group of animals on the earth, the great armored fishes of the Devonian age. The gar pike is an example. 3. The Teleosts, or Bony Fishes. — They compose 95 per cent of all living fishes. In this group the skeleton is - RE0083 from Alamy's library of millions of high resolution stock photos, illustrations and vectors.
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Essentials of Biology Presented in Problems: By George William Hunter: Hunter, George William: 9781144003713: : Books