| 名稱 恐龍骨化石 | Name Dinosaur Bone Fossil |
| 地質年代 白堊紀 | Geological Age Cretaceous |
| 描述 恐龍骨化石很容易與其他岩石區分開。骨骼的細胞結構通常是可見的，如孔狀的蜂窩。一些恐龍骨骼用於製作珠寶。它需要高拋光度，細胞結構的圖案也增加了美感。恐龍或生活在中生代的侏羅紀和白堊紀。科學家將恐龍分為兩類：Saurischia（爬行動物的臀部）和Ornithischia（鳥的臀部）。一些恐龍有羽毛。大多數古生物學家認為，恐龍是當今鳥類的祖先。 | Description Dinosaur bone fossil is easily distinguished from other rocks. The cell structure of the bone is usually visible. This shows up as a honeycomb of holes. Some dinosaur bone is used in making jewelry. It takes a high polish and the patterns of the cell structure add to the beauty of the stone. Dinosaurs or lived during the Jurassic and Cretaceous Periods of the Mesozoic era. Scientists divide dinosaurs into two groups: Saurischia (reptile hipped) and Ornithischia (bird hipped). Some dinosaurs had feathers. Most paleontologists believe that dinosaurs were the ancestors of todays birds. |
| 地點 美國 | Location U.S.A. |
| 參考 Reference | |
| 編者 由 3E (5) 陳珈蕎 於4/6/2018編寫 _________ 於17/1/18最後編改 | Editor Created by 3E (5) Chan Ka Kiu on 4/6/2018 Last modified by ________ as on 17/1/2018 |
