ornithischian

简明释义

英[ˌɔrnɪˈθɪskiən]美[ˌɔrnɪˈθɪskiən]

鸟臀目恐龙

鸟臀目恐龙的

英英释义

单词用法

同义词

反义词

例句

1.William Hammer of Augustana College found the new creature -- a four- to five-foot ornithischian or bird-hipped dinosaur that he believes is related to the fabrosaur or heterodontosaur.

奥古斯塔纳大学（Augustana College）的威廉·汉莫（William Hammer）发现了这种新的生物——一头四到五英尺的鸟臀目恐龙，他认为它与法布尔龙或畸齿龙有血缘关系。

2.William Hammer of Augustana College found the new creature -- a four- to five-foot ornithischian or bird-hipped dinosaur that he believes is related to the fabrosaur or heterodontosaur.

奥古斯塔纳大学（Augustana College）的威廉·汉莫（William Hammer）发现了这种新的生物——一头四到五英尺的鸟臀目恐龙，他认为它与法布尔龙或畸齿龙有血缘关系。

3.Hammer found more parts of that dinosaur as well as a large sauropod, or plant-eater, resembling a diplodocus, and the new, as-yet-undescribed ornithischian.

汉莫除了发现了这条恐龙的更多部位以外，还发现了一条大型蜥脚类动物，或食草类恐龙，类似于梁龙，以及这条新的、尚无任何描述的鸟臀目恐龙。

4.Paleontologists study ornithischian fossils to understand their evolution.

古生物学家研究鸟臀目化石以了解它们的进化。

5.Some well-known ornithischian species include Stegosaurus and Triceratops.

一些著名的鸟臀目物种包括剑龙和三角龙。

6.Many ornithischian dinosaurs lived during the Jurassic and Cretaceous periods.

许多鸟臀目恐龙生活在侏罗纪和白垩纪时期。

7.The distinctive features of ornithischian dinosaurs include a beak-like mouth and often plated or horned bodies.

这种鸟臀目恐龙的独特特征包括喙状嘴和常常有鳞片或角状的身体。

8.The ornithischian dinosaurs were primarily herbivorous, meaning they ate plants.

这种鸟臀目恐龙主要是食草动物，意味着它们吃植物。

作文

The study of dinosaurs has always fascinated both scientists and the general public. Among the various classifications of these ancient reptiles, one of the most intriguing groups is the ornithischian. The term ornithischian refers to a specific clade of dinosaurs characterized by their bird-like hips and unique adaptations that set them apart from their theropod cousins. This group includes well-known dinosaurs such as Stegosaurus, Triceratops, and Ankylosaurus, each showcasing distinct features that have captivated paleontologists for decades.The name ornithischian is derived from Greek words meaning 'bird' and 'hip', which reflects the anatomical similarities between these dinosaurs and modern birds. Unlike the Saurischia, which includes the theropods (the group that gave rise to birds), ornithischians possess a pelvic structure that resembles that of birds, suggesting a complex evolutionary history. This adaptation likely provided advantages in locomotion and stability, allowing them to thrive in various environments during the Mesozoic Era.One of the most fascinating aspects of ornithischian dinosaurs is their diverse range of dietary habits. They include herbivorous species that developed specialized teeth and jaw structures to process tough plant material. For instance, the duck-billed hadrosaurs were known for their flat, broad beaks that allowed them to graze efficiently on low-lying vegetation. Similarly, the armored Ankylosaurs had strong, grinding teeth that enabled them to eat fibrous plants, showcasing the adaptability of ornithischians to their surroundings.Moreover, the social behavior exhibited by some ornithischians adds another layer of intrigue to their study. Fossil evidence suggests that many of these dinosaurs lived in herds, providing protection against predators and enhancing their chances of survival. The discovery of nesting sites and fossilized eggs indicates that they may have engaged in parental care, further emphasizing the complexity of their social structures.The extinction event that occurred around 66 million years ago marked the end of the age of dinosaurs, including the ornithischians. However, their legacy continues to influence our understanding of evolution and the development of modern birds. Research into their anatomy, behavior, and ecology has provided invaluable insights into the transition from dinosaurs to avian species, highlighting the significance of ornithischians in the evolutionary timeline.In conclusion, the ornithischian dinosaurs represent a remarkable chapter in the history of life on Earth. Their unique adaptations, diverse diets, and social behaviors make them a subject of ongoing research and fascination. As scientists continue to uncover new fossils and refine our understanding of these ancient creatures, the story of ornithischians will undoubtedly continue to evolve, offering deeper insights into the intricate tapestry of life that once roamed our planet.

对恐龙的研究一直吸引着科学家和公众的兴趣。在这些古代爬行动物的各种分类中，最有趣的群体之一就是鸟臀目。术语鸟臀目指的是一类特定的恐龙，其特点是它们的鸟类髋部和独特的适应性，使它们与其兽脚类表亲区分开来。这个群体包括一些著名的恐龙，如剑龙、三角龙和甲龙，每种恐龙都有独特的特征，几十年来一直吸引着古生物学家的注意。鸟臀目这个名字源于希腊词，意为“鸟”和“臀”，反映了这些恐龙与现代鸟类之间的解剖相似性。与包括鸟类的兽脚类不同，鸟臀目具有一种类似鸟类的骨盆结构，这表明它们复杂的进化历史。这种适应性可能在运动和稳定性方面提供了优势，使它们能够在中生代期间在各种环境中繁荣发展。鸟臀目恐龙最迷人的方面之一是它们多样的饮食习惯。它们包括草食性物种，这些物种发展出专门的牙齿和颌部结构，以处理坚韧的植物材料。例如，鸭嘴龙以其平坦宽阔的喙而著称，使它们能够高效地啃食低矮的植被。同样，盔甲龙拥有强壮的磨牙，使它们能够吃纤维植物，展示了鸟臀目对环境的适应能力。此外，一些鸟臀目所表现出的社会行为为它们的研究增添了另一层趣味。化石证据表明，许多这些恐龙生活在群体中，为抵御捕食者提供保护，提高了生存机会。巢穴和化石化卵的发现表明，它们可能参与了育幼，进一步强调了它们社会结构的复杂性。大约6600万年前发生的灭绝事件标志着恐龙时代的结束，包括鸟臀目。然而，它们的遗产继续影响我们对进化的理解以及现代鸟类的发展。对它们的解剖、行为和生态的研究为我们提供了无价的见解，揭示了从恐龙到鸟类物种的过渡，突显了鸟臀目在进化时间线中的重要性。总之，鸟臀目恐龙代表了地球生命历史中一个非凡的篇章。它们独特的适应性、多样的饮食和社会行为使它们成为持续研究和迷人主题。随着科学家们不断发现新的化石并完善我们对这些古代生物的理解，鸟臀目的故事无疑将继续演变，为我们提供更深入的见解，揭示曾经在我们星球上漫游的生命错综复杂的织锦。