brachiopod

简明释义

英[ˈbrækiəpɒd]美[ˈbrækiəpɑːd]

n. 腕足类动物的一种

英英释义

单词用法

同义词

反义词

例句

1.Thus, this area shOuld belong to North China Region(otprovince )of the Old World Realm in respoct to reginalism of brachiopod zoogeography during lateEaly Devonian time.

故本区早泥盆世晚期腕足动物地理区应属老世界域的中国北方区。

2.Thus, this area shOuld belong to North China Region(otprovince )of the Old World Realm in respoct to reginalism of brachiopod zoogeography during lateEaly Devonian time.

故本区早泥盆世晚期腕足动物地理区应属老世界域的中国北方区。

3.The part brachiopod genera and species are described as addendum in this paper.

文中补遗描述部分腕足类属种。

4.The fossil record shows that the brachiopod 腕足动物 was once abundant in marine environments.

化石记录显示，腕足动物曾在海洋环境中非常丰富。

5.Scientists study brachiopods 腕足动物 to understand ancient ocean ecosystems.

科学家研究腕足动物以了解古代海洋生态系统。

6.The shell of a brachiopod 腕足动物 is often mistaken for that of a mollusk.

一个腕足动物的壳常常被误认为是软体动物的壳。

7.Some species of brachiopods 腕足动物 have survived for hundreds of millions of years.

一些种类的腕足动物已经存活了数亿年。

8.In paleontology, the presence of brachiopods 腕足动物 can indicate the age of rock layers.

在古生物学中，腕足动物的存在可以指示岩层的年代。

作文

The study of paleontology offers fascinating insights into the history of life on Earth. Among the many intriguing organisms that once thrived in our oceans, the brachiopod stands out as a remarkable example of evolutionary success. These marine animals, resembling clams, have existed for over 500 million years and provide valuable information about ancient ecosystems. The term brachiopod refers to a group of lophophorate animals that possess two shells, or valves, which are typically symmetrical. Unlike bivalves, which are more commonly known and consumed by humans, brachiopods have a different internal structure and feeding mechanism.Historically, brachiopods were incredibly abundant and diverse, especially during the Paleozoic era. Fossil records indicate that they dominated marine environments, with thousands of species existing at one time. Their unique adaptations allowed them to thrive in various habitats, from shallow coastal waters to deep ocean floors. The presence of these organisms in the fossil record provides paleontologists with crucial data about past climate conditions and oceanic changes.One of the most interesting aspects of brachiopods is their method of feeding. They use a specialized structure called a lophophore, which is a crown of tentacles lined with cilia. This allows them to filter food particles from the water efficiently. As water flows through their shells, microscopic organisms and organic matter are trapped by the cilia and transported to the mouth. This feeding strategy highlights the ecological role of brachiopods as important contributors to marine food webs.Despite their historical prevalence, modern brachiopods are relatively rare compared to their ancient relatives. Today, only about 300 living species are known, primarily found in deep-sea environments. The decline of brachiopods can be attributed to several factors, including competition with bivalves and changes in ocean chemistry. As the oceans continue to evolve due to climate change and human activities, understanding the biology and ecology of brachiopods becomes increasingly important.In conclusion, the brachiopod serves as a reminder of the complexity and diversity of life on our planet. Their long evolutionary history and unique adaptations make them a key subject of study for scientists seeking to understand past and present marine ecosystems. By examining the fossilized remains of brachiopods, researchers can gain insights into the environmental conditions that shaped our oceans millions of years ago. As we continue to explore the depths of our seas, the brachiopod will undoubtedly remain a symbol of resilience and adaptability in the face of changing environments.

古生物学的研究为我们提供了对地球生命历史的迷人洞察。在曾经繁荣于海洋的众多有趣生物中，腕足动物作为一种显著的进化成功的例子脱颖而出。这些海洋动物看起来像蛤蜊，已经存在超过五亿年，为我们提供了关于古代生态系统的宝贵信息。术语腕足动物指的是一类具有两个壳或阀的带有触角的动物，这些壳通常是对称的。与更常见且被人类食用的双壳类动物不同，腕足动物具有不同的内部结构和取食机制。在历史上，腕足动物曾经极其丰富多样，尤其是在古生代时期。化石记录表明，它们主导了海洋环境，当时有成千上万的物种同时存在。它们独特的适应能力使它们能够在各种栖息地中繁衍生息，从浅海沿岸到深海底部。这些生物在化石记录中的存在为古生物学家提供了有关过去气候条件和海洋变化的重要数据。腕足动物最有趣的方面之一是它们的取食方法。它们使用一种叫做触手冠的特殊结构，触手上覆盖着纤毛。这使得它们能够有效地从水中过滤食物颗粒。当水流过它们的壳时，微小的生物和有机物质被纤毛捕获并运输到嘴部。这种取食策略突显了腕足动物作为海洋食物网重要贡献者的生态角色。尽管它们在历史上曾经盛行，但现代的腕足动物与它们的古代亲属相比相对稀少。如今，仅约有300种活着的物种被知晓，主要分布在深海环境中。腕足动物数量减少可以归因于几个因素，包括与双壳类动物的竞争以及海洋化学的变化。随着海洋由于气候变化和人类活动而不断演变，理解腕足动物的生物学和生态学变得愈发重要。总之，腕足动物提醒我们地球生命的复杂性和多样性。它们漫长的进化历史和独特的适应能力使它们成为科学家研究过去和现在海洋生态系统的关键对象。通过研究腕足动物的化石遗骸，研究人员可以深入了解数百万年前塑造我们海洋的环境条件。随着我们继续探索海洋深处，腕足动物无疑将继续成为面对环境变化时韧性和适应性的象征。