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Fossils and Earth’s Geologic History

Fossils and Earth’s Geologic History. Fossil Event Div. B&C. ALL GEOLOGIC TIME IS DIVIDED INTO TWO EONS. PHANEROZOIC FROM 570 MILLION YEARS AGO TO THE PRESENT PRECAMBRIAN EON FROM 3.4 BILLION YEARS AGO TO 570 MILLION YEARS AGO. EACH EON IS DIVIDED INTO PERIODS.

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Fossils and Earth’s Geologic History

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  1. Fossils and Earth’s Geologic History Fossil Event Div. B&C

  2. ALL GEOLOGIC TIME IS DIVIDED INTO TWO EONS • PHANEROZOIC FROM 570 MILLION YEARS AGO TO THE PRESENT • PRECAMBRIAN EON FROM 3.4 BILLION YEARS AGO TO 570 MILLION YEARS AGO

  3. EACH EON IS DIVIDED INTO PERIODS • ONLY THE PHANEROZOIC IS DIVIDED INTO ERAS, • THE THREE YOU NEED TO KNOW ARE • PALEOZOIC • MESOZOIC • CENOZOIC

  4. EACH OF THE ERAS IN TURN IS DIVIDED INTO PERIODS

  5. PALEOZOIC ERA • CAMBRIAN • ORDOVICIAN • SILURIAN • DEVONIAN • MISSISSIPIAN • PERMIAN

  6. MESOZOIC ERA • TRIASSIC • JURASSIC • CRETACEOUS

  7. CENOZOIC ERA • TERTIARY • QUATERNARY

  8. PERIODS IN TURN ARE DIVIDED INTO EPOCHS

  9. THE PERIODS OF THE PALEOZOIC AND MESOZOIC ARE SIMPLY DIVIDED INTO EARLY, MIDDLE AND LATE EPOCHS

  10. EPOCHS OF THE CENOZOIC ERA ARE GIVEN DISTINCTIVE NAMES IN EACH OF THE PERIODS

  11. TERTIARY PERIOD • PALEOCENE • EOCENE • OLIGOCENE • MIOCENE • PLIOCENE

  12. QUATERNARY PERIOD • PLEISTOCENE • HOLOCENE (PRESENT)

  13. MOST GEOLOGISTS THINK THAT THROUGHOUT IT’S HISTORY EARTH’S CLIMATE HAS SEE-SAWED BETWEEN A ‘HOT HOUSE’ AND AN ‘ICE BOX’ CLIMATE

  14. PreCambrian Eon570 million-3.4 billion years ago

  15. PALEOZOIC ERA 570 MILLION YEARS AGO- 225 MILLION YEARS AGO

  16. CAMBRIAN PERIOD 570-500 MILLION YEARS AGO

  17. ORDOVICIAN PERIOD 430-500 MILLION YEARS AGO

  18. SILURIAN PERIOD 395-430 MILLION YEARS AGO

  19. DEVONIAN PERIOD 345-395 MILLION YEARS AGO

  20. THE MISSISSIPPIAN 325-345 MILLION YEARS AGO AND PENNSYLVANIAN PERIODS 280-325 MILLION YEARS AGO MAY BE GROUPED TOGETHER

  21. AS THE CARBONIFEROUS PERIOD

  22. PERMIAN PERIOD 225-280 MILLION YEARS AGO

  23. MESOZOIC ERA

  24. TRIASSIC PERIOD 190-225 MILLION YEARS AGO

  25. JURASSIC PERIOD 136-190 MILLION YEARS AGO

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