paleogene

简明释义

英[ˈpælɪəʊˌdʒiːn]美[ˈpæliədʒiːn]

adj. 下第三系的，早第三纪的

n. 下第三系，早第三纪

英英释义

单词用法

同义词

反义词

例句

1.Recently, lots of dinosaurs found from the originally named Paleogene "Mangchuan Formation" of the Ruyang Basin of Henan Province form a distinct dinosaurian fauna.

在河南省汝阳盆地原划分的古近系始新统“蟒川组”中新发现了大量的恐龙化石。

2.The Paleogene Qianjiang and Xinggouzui Formations with abundant hydrochemical data are main objective intervals targets for hydrocarbon exploration in Jianghan Basin.

江汉盆地下第三系潜江组和新沟嘴组是主要油气勘探目的层，水化学资料较多。

3.Banghu syncline in the Qianjiang sag is a depocenter of Paleogene Qianjiang Formation, and is the richest hydrocarbon generation center in Jianghan Basin.

潜江凹陷蚌湖向斜是下第三系潜江组的沉积中心，是江汉盆地油气最富集的生烃中心。

4.It says lice are old, predate the Cretaceous-Paleogene boundary, and must have been living on something.

它说明了虱子的历史非常久，在白垩纪-早第三纪过渡期之前，而且也肯定是寄生在某种生物上的。

5.The Paleogene Shahejie Formation (Es) is the most important hydrocarbon accumulation combination in the Dongying depression.

古近系沙河街组是东营凹陷最重要的成藏组合。

6.The Paleogene source rock in Jinhu depression, Subei basin, is characterized by "shallow maturation".

苏北盆地金湖凹陷古近系烃源岩具有“浅熟”特征。

7.The fossil records from the Paleogene 古新世 period reveal significant evolutionary changes.

来自古新世 古新世 期的化石记录揭示了重要的进化变化。

8.During the Paleogene 古新世, mammals began to diversify rapidly.

在古新世 古新世 期间，哺乳动物开始迅速多样化。

9.The climate during the early Paleogene 古新世 was generally warmer than today.

早期的古新世 古新世 气候通常比今天温暖。

10.Geologists often study rock layers from the Paleogene 古新世 to understand Earth's history.

地质学家常常研究来自古新世 古新世 的岩层，以了解地球的历史。

11.Many modern birds can trace their ancestry back to the Paleogene 古新世 period.

许多现代鸟类可以追溯到古新世 古新世 期间。

作文

The Paleogene period, which lasted from about 66 to 23 million years ago, is a significant era in Earth's history that followed the mass extinction event at the end of the Cretaceous period. This era is crucial for understanding the evolution of mammals and birds, as it marks a time when these groups began to diversify and thrive after the dinosaurs' extinction. The Paleogene is divided into three epochs: the Paleocene, Eocene, and Oligocene, each characterized by distinct climatic conditions and ecological developments. During the early part of the Paleogene, known as the Paleocene epoch, the Earth experienced a warm climate that allowed for the rapid recovery of flora and fauna. Forests spread across much of the planet, providing habitats for a variety of species. This period saw the emergence of early mammals, which were small and mostly nocturnal. They adapted to fill ecological niches left vacant by the dinosaurs. As the climate continued to warm, the Eocene epoch began, characterized by even more diverse ecosystems. The Eocene epoch is particularly notable for the appearance of many modern mammal families. This was a time of significant evolutionary experimentation, where mammals began to develop features that would eventually lead to the species we see today. For instance, early forms of horses, whales, and primates emerged during this time. The climate was generally warm and humid, leading to lush tropical forests in many regions. This warm climate also facilitated the expansion of flowering plants, which became dominant during the Paleogene. As we moved into the Oligocene epoch, the global climate began to cool, leading to the formation of grasslands and savannas. This shift had profound effects on the types of animals that thrived during this time. Many mammals adapted to the new environments, evolving larger bodies and different behaviors suited for open landscapes. The Paleogene period thus laid the groundwork for the mammals that would dominate the planet in the subsequent Neogene period. The study of the Paleogene is essential for paleontologists because it offers insights into the processes of evolution and extinction. Fossil records from this period reveal how life on Earth rebounded after one of its most significant mass extinctions. By examining the diversity of species from the Paleogene, scientists can better understand the factors that influence biodiversity and the resilience of ecosystems. In conclusion, the Paleogene period is a fascinating chapter in the history of our planet. It represents a time of recovery and adaptation, where life not only survived but thrived in the aftermath of a catastrophic event. The lessons learned from this era are invaluable, as they remind us of the dynamic nature of life on Earth and the importance of preserving biodiversity in the face of modern challenges. Understanding the Paleogene helps us appreciate the complex interplay between climate, environment, and life, providing a context for current ecological issues and the future of our planet.

古新世（Paleogene）时期，大约从6600万年前到2300万年前，是地球历史上一个重要的时代，它紧随白垩纪末期的大规模灭绝事件之后。这个时代对于理解哺乳动物和鸟类的进化至关重要，因为它标志着这些群体在恐龙灭绝后开始多样化和繁荣的时期。Paleogene分为三个世：古新世、始新世和渐新世，每个世都有其独特的气候条件和生态发展。 在古新世的早期阶段，地球经历了温暖的气候，这使得植物和动物迅速恢复。森林遍布地球的许多地方，为各种物种提供栖息地。这个时期出现了早期的哺乳动物，它们体型小且大多是夜行性的，适应了恐龙留下的生态位。随着气候持续变暖，始新世开始了，特征是更加多样化的生态系统。 始新世特别值得注意的是许多现代哺乳动物家族的出现。这是一个显著的进化实验时期，哺乳动物开始发展出最终导致我们今天所见物种的特征。例如，早期的马、鲸鱼和灵长类动物在这一时期出现。气候通常温暖潮湿，导致许多地区的热带森林繁盛。这种温暖的气候也促进了开花植物的扩展，这些植物在古新世时期成为主导。 随着进入渐新世，全球气候开始变冷，导致草原和稀树草原的形成。这种变化对在此期间繁荣的动物类型产生了深远的影响。许多哺乳动物适应了新的环境，演化出更大的身体和适合开放景观的不同行为。因此，古新世为随后新生代时期将主导地球的哺乳动物奠定了基础。 对古新世的研究对于古生物学家来说至关重要，因为它提供了对进化和灭绝过程的洞察。从这个时期的化石记录揭示了生命在经历了一次重大大规模灭绝后的恢复过程。通过研究古新世的物种多样性，科学家可以更好地理解影响生物多样性的因素以及生态系统的韧性。 总之，古新世（Paleogene）时期是我们星球历史上一个迷人的篇章。它代表了一个恢复和适应的时期，在这个时期，生命不仅存活下来，而且在灾难事件之后蓬勃发展。从这个时代学到的教训是无价的，因为它提醒我们地球上生命的动态本质，以及在现代挑战面前保护生物多样性的重要性。理解古新世有助于我们欣赏气候、环境和生命之间复杂的相互作用，为当前的生态问题和我们星球的未来提供了背景。