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関連する概念動画

The Fossil Record02:56

The Fossil Record

The fossil record documents only a small fraction of all organisms that have ever inhabited Earth. Fossilization is a rare process, and most organisms never become fossils. Moreover, the fossil record only exhibits fossils that have been discovered. Nevertheless, sedimentary rock fossils of long-lived, abundant, hard-bodied organisms dominate the fossil record. These fossils offer valuable information, such as an organism's physical form, behavior, and age. Studying the fossil record helps...
Convergent Evolution01:54

Convergent Evolution

Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection pressure leads to the rise of similar but unrelated adaptations in organisms with no recent common ancestors, a process known as convergent evolution.The structures that arise from convergent evolution are called analogous structures. They are similar in function even if they are dissimilar in structure. Further, structures can be analogous while also...

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関連する実験動画

Updated: Jul 9, 2026

Two-step Approach to Explore Early- and Late-stages of Organ Formation in the Avian Model: The Thymus and Parathyroid Glands Organogenesis Paradigm
13:43

Two-step Approach to Explore Early- and Late-stages of Organ Formation in the Avian Model: The Thymus and Parathyroid Glands Organogenesis Paradigm

Published on: June 17, 2018

考古学:皮のような殻を持つペトロサウルスの卵.

Qiang Ji1, Shu-An Ji, Yen-Nien Cheng

  • 1Department of Earth Sciences, Nanjing University, Nanjing 210093, China.

Nature
|December 4, 2004
PubMed
まとめ

飛ぶ爬虫類は,卵を産むことによって繁殖し,新しい化石の発見によって確認されています. この精巧なプテロサウルスの卵の標本には,柔らかい,皮のような殻構造があり,プテロサウルスの繁殖に関する私たちの理解を深めています.

科学分野:

  • パレオントロジー・パレオントロジー
  • 脊椎動物の古生物学について
  • 中世 爬虫類 中世爬虫類

背景:

  • プテロサウルスは,メソゾーイク時代に生きた飛ぶ爬虫類でした.
  • プテロサウルスの生殖戦略,特に卵殻の構造は,現在進行中の研究分野です.
  • 以前の発見は,ペトロサウルスの卵性に関する洞察を提供してきました.

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Last Updated: Jul 9, 2026

Two-step Approach to Explore Early- and Late-stages of Organ Formation in the Avian Model: The Thymus and Parathyroid Glands Organogenesis Paradigm
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Published on: June 17, 2018

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Processing Embryo, Eggshell, and Fungal Culture for Scanning Electron Microscopy

Published on: August 16, 2019

Investigating Scarless Tissue Regeneration in Embryonic Wounded Chick Corneas
09:31

Investigating Scarless Tissue Regeneration in Embryonic Wounded Chick Corneas

Published on: May 2, 2022