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홈 전시체험1관암석 속 지구 역사

암석 속 지구 역사

암석 속에 숨겨진 비밀

화석이란?

Earth history in rock

Precambrian Eon 3.8 billion years ago to 542 million years ago

Archean 3.8 to 3.7 billion years ago: the emergence of the first life

3.5 billion years ago: the emergence of prokaryotes

Proterozoic Two billion years ago: the emergence of eukaryotes

One billion years ago: the emergence of multicellular organisms

Six to seven hundred million years ago: the fossil emergence of Ediacara fauna (Dickinsonia, Spriggina, Jellyfish)

Paleozoic Era 542 million years ago - 251 million years ago

Cambrian: More than 500 species of fossils are produced in Canada's Burgess Shale fauna

Ordovician: The age of invertebrates (trilobites, brachiopod, cephalopods, graptolite, etc.)

Silurian: The emergence of primitive vertebrates, the greatness of coral reefs, and sea scorpions as predators

Devonian: The emergence of land plants / fish flourishes, the first amphibian, the ichthyostega, emerged

Carboniferous plants: Large ferns by ferns and insects in forests

Permian: 96% of animals, including amphibians and the birth of primitive reptiles, end-Permian trilobites, are extinct

Mesozoic era 251 million years ago ~ 65 million years ago

Triassic: Dry and warm desert climate zones develop widely on the continent. Ammonites, bivalves, reptiles, gymnosperms, and primordial mammals

Jurassic: Temperate and humid climates create dinosaurs and other reptiles. Archeopteryx appeared at the end of Jurassic

Cretaceous: warmth and good habitat have led to various creatures flourishing, but at the end of the day, dinosaurs and ammonites are extinct due to environmental changes

Cenozoic Era 65 million years ago to about 10,000 years ago

Phase 3: Generally warm in the first half and cold in the end. Ammonites, dinosaurs are extinct, and foraminifera and mammals were proliferating. Generation of angiosperms.

Phase 4: Ice Age, the nearest geologic age that resembles the present era, the humanity has emerged and evolved/developed

지질 시대에 살았던 고생물의 유해나 흔적이 남아 있는 것이다. 지질시대에 살았던 생물의 유해인 체화석과, 발자국 등의 흔적인 생흔화석으로 분류된다. 화석을 살핌으로써 생물체의 구조나 생활환경을 알아볼 수 있다.

화석의 종류

  • 표준화석: 생존 기간이 짧고 진화 속도가 빠르며 넓은 지역에 걸쳐 산출되는 화석으로 지층의 생성 시기를 알려준다.
  •  

    예) 삽엽충, 푸줄리나, 암모나이트, 공룡, 매머드, 화폐석

     

  • 시상화석: 생존 기간이 길고 , 환경 변화에 민감하며, 좁은 범위에 걸쳐 산출하는 화석으로, 지층 생성될 당시의 환경을 잘 알려준다.
  •  

    예) 산소(수심이 얕고, 물이 맑고, 온난한 바다), 고사리(온난 습윤한 늪지대)

     

  • [참고:위키피디아]
최근 업데이트 일시 : 2019-06-05