搜尋結果
2 天前 · 鱷目 （ 学名 ： Crocodilia ）通称为 鳄鱼 ，是典型的大型食肉動物，屬於 脊索动物门 蜥形綱 。 分佈於 熱帶 到 亞熱帶 的河川、湖泊、海岸中，現存25種。 生理学. 尼罗鳄 的骨架. 鳄鱼可以隐藏在水中，只有鼻孔、眼睛和耳孔露岀水面。 鱷目的体长范围从1.2米到7米；一些史前物种，例如晚白垩世的 恐鳄 ，体长可达约10米以上 [1] ，可重达3.5吨。 鱷目具有 两性异形 特征，雄性的体型一般比雌性大 [2] 。 虽然口鼻和牙齿形状各不相同，但鳄目所有物种都具有基本相同的身体形态，皮肤覆盖粗大的鱗片，口鼻细长扁平以及尾巴形状侧扁有力 [2] 。 鳄目的眼睛、耳孔和鼻孔位于头顶，这构造使得它们的大部分身体能够淹没在水下 [3] 。
1 天前 · Crocodilia (or Crocodylia, both / krɒkəˈdɪliə /) is an order of mostly large, predatory, semiaquatic reptiles known as crocodilians. They first appeared 94 million years ago in the Late Cretaceous period ( Cenomanian stage) and are the closest living relatives of birds, as the two groups are the only known survivors of the Archosauria.
其他人也問了
Where do crocodiles live?
What reptiles are crocodilians?
Are alligators crocodilian?
What is a crocodile family?
1 天前 · The American alligator ( Alligator mississippiensis ), sometimes referred to colloquially as a gator or common alligator, is a large crocodilian reptile native to the Southeastern United States and a small section of northeastern Mexico.
3 天前 · Reptile, any member of the class Reptilia, the group of air-breathing vertebrates that have internal fertilization, amniotic development, and epidermal scales covering part or all of their body. The major groups of living reptiles are turtles, tuatara, lizards, snakes, and crocodiles.
2 天前 · Stephen Robert Irwin (22 February 1962 – 4 September 2006), known as " The Crocodile Hunter ", was an Australian zookeeper, conservationist, television personality, wildlife educator, and environmentalist . Irwin grew up around crocodiles and other reptiles and was educated regarding them by his father, Bob.
- 1991–2006
- Stingray injury to the heart
- 22 February 1962, Upper Ferntree Gully, Victoria, Australia
5 天前 · Crocodilians—semiaquatic reptiles comprising crocodiles, gharials, alligators and caimans—are remarkable. Often described as living fossils due to their ancient lineage, these formidable ...
4 天前 · Most crocodiles in Mexico can be seen along the Gulf of Mexico, coast in brackish waters, and in savannas on the Yucatán Peninsula. These areas have the perfect kind of ecoregion habitats such as freshwater rivers, swamps, and lakes that they prefer to live in.
