coelurosaur

简明释义

英[ˌkoʊəˈlʊrəˌsɔr]美[ˌkoʊəˈlʊrəˌsɔr]

n. 虚骨龙；虚骨龙类

英英释义

单词用法

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例句

1.Careful analysis revealed that the tail once belonged to a young coelurosaur, a dinosaur family that includes tyrannosaurs and modern birds.

细致的分析揭示了这块尾巴曾经属于一只年轻的虚骨龙，这一科恐龙包括霸王龙和现代鸟类。

2.Careful analysis revealed that the tail once belonged to a young coelurosaur, a dinosaur family that includes tyrannosaurs and modern birds.

细致的分析揭示了这块尾巴曾经属于一只年轻的虚骨龙，这一科恐龙包括霸王龙和现代鸟类。

3.The coelurosaur dinosaurs were known for their agility and speed.

这些小盗龙类恐龙以其敏捷和速度而闻名。

4.Paleontologists discovered a new species of coelurosaur in the fossil beds.

古生物学家在化石床中发现了一种新的小盗龙类物种。

5.Some coelurosaur species had feathers, indicating a close relationship with birds.

一些小盗龙类物种有羽毛，表明它们与鸟类的密切关系。

6.Many birds are considered modern descendants of coelurosaurs.

许多鸟类被认为是现代小盗龙类的后代。

7.The coelurosaur family includes both small and large species.

这小盗龙类家族包括小型和大型物种。

作文

The term coelurosaur refers to a diverse group of theropod dinosaurs that are characterized by their small size, lightweight build, and often feathered bodies. These fascinating creatures thrived during the Late Jurassic to the Cretaceous period and are considered to be closely related to modern birds. The name coelurosaur literally means 'hollow lizard,' which is derived from the Greek words 'koilos' meaning hollow, and 'sauros' meaning lizard. This group includes some of the most well-known dinosaurs, such as Velociraptor and Tyrannosaurus rex, although the latter is not a coelurosaur in the strictest sense. Understanding coelurosaurs is crucial for paleontologists as they provide significant insights into the evolution of birds from theropod ancestors.One of the most intriguing aspects of coelurosaur evolution is the development of feathers. Initially thought to be exclusive to birds, evidence now suggests that many coelurosaur species had feathers or feather-like structures. Fossils have shown that these feathers were not only used for insulation but also played a role in display and possibly even in gliding or flight. This discovery has led scientists to re-evaluate the relationship between dinosaurs and birds, further solidifying the idea that birds are indeed modern-day coelurosaurs.The ecological roles of coelurosaurs varied greatly, with some being agile predators while others were likely omnivorous or herbivorous. Their adaptations, such as sharp claws and keen eyesight, made them effective hunters in their respective environments. For instance, the famous Velociraptor is often depicted as a cunning predator, using its speed and agility to catch prey. Such characteristics highlight the evolutionary success of coelurosaurs and their ability to adapt to changing environments over millions of years.In recent years, discoveries in China, particularly in the Liaoning Province, have unearthed exceptionally preserved fossils of coelurosaurs, shedding light on their physical appearance and behavior. Many of these fossils exhibit feathers, providing a clearer picture of what these dinosaurs looked like in life. The presence of feathers on coelurosaurs challenges previous notions that feathers were solely for flight and indicates that they may have served multiple functions, including thermoregulation and mating displays.The study of coelurosaurs also raises questions about the extinction event that wiped out the majority of dinosaur species approximately 66 million years ago. While it is widely accepted that a massive asteroid impact contributed to this mass extinction, coelurosaurs and their avian descendants managed to survive. This survival led to the emergence of the birds we see today, showcasing the resilience and adaptability of this group.In conclusion, coelurosaurs represent a remarkable chapter in the history of life on Earth. Their unique characteristics and evolutionary significance make them a subject of great interest in the field of paleontology. As research continues and new discoveries are made, our understanding of coelurosaurs and their connection to modern birds will undoubtedly deepen, revealing more about the incredible journey of life through time.

术语coelurosaur指的是一类多样化的兽脚亚目恐龙，这些恐龙的特点是体型较小、结构轻巧，且通常具有羽毛。这些迷人的生物在晚侏罗世到白垩纪期间繁盛，被认为与现代鸟类密切相关。coelurosaur这个名字字面意思是“空心蜥蜴”，源自希腊语中的“koilos”，意为空心，和“sauros”，意为蜥蜴。这个群体包括一些最著名的恐龙，如迅猛龙和霸王龙，尽管后者在严格意义上并不是coelurosaur。理解coelurosaur对于古生物学家来说至关重要，因为它们提供了关于鸟类从兽脚类祖先演化的重要见解。coelurosaur演化中最引人入胜的一个方面是羽毛的发展。最初被认为是鸟类所独有的，证据现在表明许多coelurosaur物种拥有羽毛或羽毛状结构。化石显示，这些羽毛不仅用于保温，还可能在展示和甚至滑翔或飞行中发挥作用。这一发现使科学家们重新评估了恐龙与鸟类之间的关系，进一步巩固了鸟类确实是现代coelurosaur的观点。coelurosaur的生态角色差异很大，有些是敏捷的捕食者，而其他的可能是杂食性或植食性。它们的适应特征，如锋利的爪子和敏锐的视力，使它们在各自的环境中成为有效的猎手。例如，著名的迅猛龙常被描绘为狡猾的捕食者，利用其速度和敏捷性捕捉猎物。这些特征突显了coelurosaur的进化成功及其在数百万年内适应变化环境的能力。近年来，在中国，特别是辽宁省的发现，出土了保存极好的coelurosaur化石，揭示了它们的外形和行为。这些化石中的许多展示了羽毛，为这些恐龙在生命中的外观提供了更清晰的图景。coelurosaur上羽毛的存在挑战了之前认为羽毛仅用于飞行的观念，并表明它们可能具有多种功能，包括温度调节和求偶展示。对coelurosaur的研究还引发了关于大约6600万年前消灭大多数恐龙物种的灭绝事件的问题。虽然广泛接受的观点是，一次巨大的小行星撞击导致了这一大规模灭绝，但coelurosaur及其鸟类后裔成功存活下来。这种生存导致了我们今天所看到的鸟类的出现，展示了这一群体的韧性和适应性。总之，coelurosaur代表了地球生命历史中的一个非凡篇章。它们独特的特征和进化意义使其成为古生物学领域极具兴趣的研究对象。随着研究的不断深入和新发现的不断涌现，我们对coelurosaur及其与现代鸟类之间联系的理解无疑会加深，揭示出生命历程中的更多惊人故事。