graptolite

简明释义

英[ˈɡræptəlaɪt]美[ˈɡræptəlaɪt]

[古生] 笔石动物

[古生] 笔石

英英释义

单词用法

同义词

反义词

例句

1.The nature of graptolite fauna, the correlation of the graptolite-bearing strata with that in other area and the Cambrian-Ordovician boundary are also discussed.

本文还对笔石动物群的性质进行了分析，与邻区和国外相当地层进行了对比，并讨论了本区寒武系与奥陶系界线。

2.The nature of graptolite fauna, the correlation of the graptolite-bearing strata with that in other area and the Cambrian-Ordovician boundary are also discussed.

本文还对笔石动物群的性质进行了分析，与邻区和国外相当地层进行了对比，并讨论了本区寒武系与奥陶系界线。

3.The optical anisotropy of zooclast graptolite in some Paleozoic strata of China has been studied using reflectance cross-plot analysis.

应用反射率十字图解研究了中国部分地区下古生界地层中动物有机碎屑笔石的光学各向异性。

4.The graptolite fauna belongs to the Zhujiang sub-form of Huanan form with typical characteristics of the Pacific graptolite fauna.

该笔石动物群属于华南型的珠江亚型，具有典型的太平洋型动物群的特点。

5.The fossilized remains of a graptolite 石炭纪动物 provide valuable insights into ancient marine ecosystems.

化石化的graptolite 石炭纪动物遗骸为古代海洋生态系统提供了宝贵的见解。

6.Scientists use graptolites 石炭纪动物 to date sedimentary rock layers due to their rapid evolution.

科学家利用graptolites 石炭纪动物来对沉积岩层进行年代测定，因为它们进化迅速。

7.The study of graptolites 石炭纪动物 has expanded our understanding of the Ordovician period.

对graptolites 石炭纪动物的研究扩展了我们对奥陶纪的理解。

8.Paleontologists often find graptolite 石炭纪动物 fossils in specific geological formations.

古生物学家常常在特定的地质构造中发现graptolite 石炭纪动物化石。

9.The morphology of graptolites 石炭纪动物 can indicate the environmental conditions of their time.

对graptolites 石炭纪动物的形态学研究可以指示它们生活时期的环境条件。

作文

The study of paleontology offers us a fascinating glimpse into the history of life on Earth. Among the myriad of ancient organisms that have captured the interest of scientists, the graptolite stands out as a particularly intriguing group. These extinct marine animals, which thrived during the Paleozoic era, are primarily known for their distinctive fossilized remains. The graptolite (石墨虫) is not just a relic of the past; it plays a crucial role in understanding geological time and the evolution of life in the oceans. Graptolites were colonial organisms that lived in the ocean, resembling small, branched structures, often compared to modern-day corals or sea pens. They flourished from the Cambrian period to the end of the Devonian period, roughly 500 to 360 million years ago. Their fossils can be found in sedimentary rocks all around the world, making them essential markers for biostratigraphy—the branch of geology that uses fossil distribution to date rock layers. One of the most remarkable aspects of graptolites is their ability to provide insights into ancient marine environments. By studying their fossils, scientists can infer the conditions of the ocean at different points in Earth's history. For instance, the presence of certain types of graptolites indicates a well-oxygenated environment, while others suggest more anoxic conditions. This information is invaluable for reconstructing past climates and understanding how life has adapted to changing environments over millions of years. Moreover, graptolites are significant for their role in the evolutionary narrative. They are thought to be closely related to modern hemichordates, which adds an interesting layer to our understanding of the tree of life. The structural complexity of graptolites also demonstrates the evolutionary innovations that occurred during the Paleozoic era, when many new life forms emerged. In addition to their scientific importance, graptolites have captured the imagination of amateur fossil hunters and professional paleontologists alike. The thrill of discovering a well-preserved graptolite fossil can be exhilarating, as each find holds the potential to unlock secrets about our planet's past. Many enthusiasts take part in field trips to areas rich in sedimentary deposits, where they can search for these ancient treasures. As we delve deeper into the study of graptolites, we continue to uncover new information that challenges our previous understandings. Advanced imaging techniques and molecular analysis are shedding light on the biology and ecology of these fascinating creatures. Furthermore, as climate change poses unprecedented challenges to modern ecosystems, the lessons learned from ancient graptolites may help us understand how life on Earth has responded to past environmental shifts. In conclusion, the graptolite (石墨虫) is more than just a fossil; it is a window into our planet's history and a key to unlocking the mysteries of evolution and environmental change. As we continue to study these ancient organisms, we gain a greater appreciation for the complexity of life and the intricate web of connections that have shaped the natural world over millions of years. Whether you are a budding paleontologist or simply someone with a curiosity for the past, the world of graptolites offers endless opportunities for exploration and discovery.

古生物学的研究为我们提供了一个迷人的视角，以了解地球上生命的历史。在众多吸引科学家兴趣的古代生物中，graptolite（石墨虫）作为一种特别引人注目的群体而脱颖而出。这些在古生代时期繁盛的已灭绝海洋生物，主要以其独特的化石遗骸而闻名。graptolite不仅是过去的遗迹；它在了解地质时间和海洋生命演化方面扮演着至关重要的角色。 石墨虫是生活在海洋中的群体生物，外观类似小型分支结构，常常被比作现代的珊瑚或海笔。它们在寒武纪到泥盆纪末期（大约5亿到3.6亿年前）繁盛。它们的化石可以在世界各地的沉积岩中找到，这使得它们成为生物地层学的重要标志——这一地质学分支利用化石分布来对岩层进行年代测定。 graptolite最显著的方面之一是它们能够提供关于古代海洋环境的见解。通过研究它们的化石，科学家可以推断出地球历史上不同阶段海洋的条件。例如，某些类型的graptolite的存在表明氧气充足的环境，而其他类型则暗示缺氧条件。这些信息对于重建过去的气候和理解生命如何在数百万年中适应变化的环境至关重要。 此外，graptolites在进化叙事中也具有重要意义。它们被认为与现代半索动物密切相关，这为我们理解生命树增添了一层有趣的背景。graptolite的结构复杂性也展示了古生代时期发生的进化创新，那时许多新的生命形式相继出现。 除了科学重要性之外，graptolite还吸引了业余化石猎人和专业古生物学家的想象力。发现保存良好的graptolite化石的激动感是令人兴奋的，因为每次发现都有可能揭开有关我们星球过去的秘密。许多爱好者参加野外考察，前往富含沉积物的地区，寻找这些古老的珍宝。 随着我们对graptolites的深入研究，我们不断揭示新的信息，这些信息挑战我们之前的理解。先进的成像技术和分子分析正在揭示这些迷人生物的生物学和生态学。此外，随着气候变化对现代生态系统造成前所未有的挑战，古代graptolites所传达的教训可能帮助我们理解生命在过去的环境变化中是如何反应的。 总之，graptolite（石墨虫）不仅仅是化石；它是通往我们星球历史的窗口，是解锁进化和环境变化奥秘的钥匙。随着我们继续研究这些古老生物，我们对生命的复杂性以及塑造自然界的错综复杂的联系有了更深的理解。无论你是一个初出茅庐的古生物学家，还是一个对过去充满好奇的人，graptolites的世界都提供了无尽的探索和发现机会。