ornithischians

简明释义

英[ˌɔrnəˈθɪskiənz]美[ˌɔrnəˈθɪskiənz]

鸟臀目恐龙

鸟臀目恐龙的

英英释义

单词用法

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例句

1.These dinosaurs were the forerunners of the bigger and more spectacular ornithischians like stegosaurus, ankylosaurus and the duck-billed dinosaurs.

这些恐龙都是更大更壮的鸟臀目恐龙，例如剑龙、甲龙和鸭嘴龙的先祖。

2.These dinosaurs were the forerunners of the bigger and more spectacular ornithischians like stegosaurus, ankylosaurus and the duck-billed dinosaurs.

这些恐龙都是更大更壮的鸟臀目恐龙，例如剑龙、甲龙和鸭嘴龙的先祖。

3.During the late Cretaceous, ornithischians 鸟脚类恐龙 dominated many ecosystems across the globe.

在晚白垩世，ornithischians 鸟脚类恐龙 主导了全球许多生态系统。

4.Many popular dinosaurs, such as Stegosaurus and Triceratops, belong to the group of ornithischians 鸟脚类恐龙.

许多受欢迎的恐龙，如剑龙和三角龙，都属于ornithischians 鸟脚类恐龙这一类群。

5.The fossil records show that ornithischians 鸟脚类恐龙 were herbivorous dinosaurs that thrived during the Jurassic period.

化石记录显示，ornithischians 鸟脚类恐龙 是在侏罗纪时期繁盛的食草恐龙。

6.Paleontologists often study the skeletal structure of ornithischians 鸟脚类恐龙 to understand their evolutionary adaptations.

古生物学家经常研究ornithischians 鸟脚类恐龙 的骨骼结构，以了解它们的进化适应性。

7.The diversity among ornithischians 鸟脚类恐龙 is remarkable, with species ranging from small bipedal forms to large quadrupedal ones.

在ornithischians 鸟脚类恐龙 中，多样性令人惊叹，物种从小型双足形态到大型四足形态不等。

作文

Dinosaurs have always fascinated people of all ages, and among the many types that roamed the Earth, the group known as ornithischians stands out for its unique characteristics and diverse species. The term ornithischians refers to a clade of dinosaurs that are primarily characterized by their bird-like hips, which is reflected in their name, meaning 'bird-hipped.' This group includes some of the most well-known dinosaurs, such as Triceratops and Stegosaurus, and they played a significant role in the Mesozoic Era's ecosystems.The evolutionary significance of ornithischians cannot be overstated. They first appeared during the Late Triassic period and thrived throughout the Jurassic and Cretaceous periods. Their adaptations allowed them to occupy various ecological niches, from herbivorous giants to smaller, more agile species. One of the most interesting aspects of ornithischians is their varied dietary habits. While many were strict herbivores, some developed specialized teeth and digestive systems to process tough plant materials, showcasing the evolutionary arms race between dinosaurs and the flora of their time.Among the most iconic ornithischians is the Stegosaurus, known for its distinctive plates along its back and spiked tail. These features likely served both defensive and social purposes, highlighting the complexity of dinosaur behavior. Similarly, the Triceratops, with its three prominent facial horns and large frill, exemplifies how ornithischians adapted physical traits for protection against predators, particularly during the late Cretaceous when large carnivorous dinosaurs, like Tyrannosaurus rex, dominated the landscape.The fossil record reveals a rich diversity within the ornithischians. Some members of this group, like the hadrosaurs or 'duck-billed' dinosaurs, exhibited remarkable adaptations, including complex dental batteries that allowed them to efficiently chew tough vegetation. These adaptations not only highlight the evolutionary success of ornithischians but also provide insights into the environmental conditions of their time, suggesting lush, plant-rich habitats that supported large herbivorous populations.Moreover, the study of ornithischians has contributed significantly to our understanding of dinosaur social behavior. Fossil evidence suggests that some species may have lived in herds, providing safety in numbers against predators. This social structure may have influenced their reproductive strategies, as seen in nesting sites where multiple individuals laid eggs close together, indicating communal care for their young.In conclusion, ornithischians represent a fascinating and diverse group of dinosaurs that played a crucial role in the prehistoric world. Their unique adaptations, from physical traits to social behaviors, illustrate the complexity of life during the Mesozoic Era. As paleontological discoveries continue to unfold, our understanding of ornithischians will only deepen, revealing more about these incredible creatures that once ruled the Earth. Their legacy remains not only in the fossil record but also in the ongoing interest they inspire in both scientists and the public alike, reminding us of the ever-evolving story of life on our planet.

恐龙一直以来都吸引着各个年龄段的人们，而在曾经统治地球的众多种类中，被称为鸟臀目的这个群体因其独特的特征和多样的物种而脱颖而出。术语鸟臀目指的是一种恐龙的分类群，主要特点是其鸟类般的臀部，这在其名字中有所体现，意思是“鸟臀”。这个群体包括一些最著名的恐龙，如三角龙和剑龙，并在中生代的生态系统中发挥了重要作用。鸟臀目的进化意义不容小觑。它们首次出现在晚三叠世，并在侏罗纪和白垩纪期间繁荣发展。它们的适应能力使它们能够占据各种生态位，从食草巨兽到更小、更灵活的物种。鸟臀目最有趣的方面之一是它们多样的饮食习惯。虽然许多成员是严格的食草动物，但一些则发展出专门的牙齿和消化系统来处理坚韧的植物材料，展示了恐龙与当时植物之间的进化竞争。在众多标志性的鸟臀目中，剑龙以其背部的独特板块和尖刺尾巴而闻名。这些特征可能既用于防御，也用于社交，突显了恐龙行为的复杂性。同样，三角龙以其三个显著的面部角和大型颈盾为例，展示了鸟臀目如何通过身体特征适应以保护自己免受捕食者的攻击，尤其是在白垩纪晚期，当大型肉食性恐龙如暴龙主宰着景观时。化石记录揭示了鸟臀目内部丰富的多样性。这个群体的一些成员，如鸭嘴龙或“鸭嘴”恐龙，表现出显著的适应性，包括复杂的牙齿结构，使它们能够有效地咀嚼坚韧的植物。这些适应不仅突显了鸟臀目的进化成功，还提供了对其时代环境条件的洞察，表明那些时期植物丰富的栖息地支持着大量的食草动物。此外，对鸟臀目的研究在我们理解恐龙社会行为方面也做出了重要贡献。化石证据表明，一些物种可能生活在群体中，以数量优势抵御捕食者。这种社会结构可能影响了它们的繁殖策略，如在多个个体近距离下蛋的巢穴，表明对幼崽的共同照顾。总之，鸟臀目代表了一组迷人且多样化的恐龙，在史前世界中发挥了关键作用。它们独特的适应性，从身体特征到社会行为，展示了中生代时期生命的复杂性。随着古生物学发现的不断展开，我们对鸟臀目的理解将进一步加深，揭示更多关于这些曾经统治地球的令人难以置信的生物的信息。它们的遗产不仅存在于化石记录中，也存在于它们激发科学家和公众持续兴趣的过程中，提醒我们地球上生命故事的不断演变。