Geologic Earth

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Across
  1. 2. a period of time in history or a person's life, typically one marked by notable events or particular characteristics.
  2. 6. of, relating to, or denoting the second period of the Mesozoic era, between the Triassic and Cretaceous periods
  3. 8. of, relating to, or denoting the second period of the Paleozoic era, between the Cambrian and Silurian periods.
  4. 10. an indefinite and very long period of time, often a period exaggerated for humorous or rhetorical effect.
  5. 12. of, relating to, or denoting the third epoch of the Tertiary period, between the Eocene and Miocene epochs
  6. 14. of, relating to, or denoting the earliest eon, preceding the Cambrian period and the Phanerozoic eon.
  7. 16. of, relating to, or denoting the first epoch of the Quaternary period, between the Pliocene and Holocene epochs.
  8. 17. of, relating to, or denoting the eon that constitutes the later part of the Precambrian, between the Archean eon and the Cambrian period, in which the earliest forms of life evolved.
  9. 20. the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.
  10. 21. of, relating to, or denoting the fourth epoch of the Tertiary period, between the Oligocene and Pliocene epochs.
Down
  1. 1. of, relating to, or denoting the earliest period of the Mesozoic era, between the Permian and Jurassic periods.
  2. 3. of, relating to, or denoting the last epoch of the Tertiary period, between the Miocene and Pleistocene epochs.
  3. 4. of, relating to, or denoting the first period in the Paleozoic era, between the end of the Precambrian eon and the beginning of the Ordovician period.
  4. 5. era Paleozoic: from 544 million to about 230 million years ago
  5. 7. of, relating to, or denoting the present epoch, which is the second epoch in the Quaternary period and followed the Pleistocene.
  6. 9. of, relating to, or denoting the fifth period of the Paleozoic era, between the Devonian and Permian periods.
  7. 11. era Mesozoic: from 230 million to 63 million years ago
  8. 13. a long and distinct period of history with a particular feature or characteristic.
  9. 14. a length or portion of time.
  10. 15. of, relating to, or denoting the eon that constitutes the earlier (or middle) part of the Precambrian, in which there was no life on earth. It precedes the Proterozoic eon.
  11. 17. of, relating to, or denoting the last period of the Paleozoic era, between the Carboniferous and Triassic periods
  12. 18. relating to or denoting the most recent era, following the Mesozoic era and comprising the Tertiary and Quaternary periods.
  13. 19. of, relating to, or denoting the later division of the Tertiary period, comprising the Miocene and Pliocene epochs.