Time Marches on.....

1234567891011121314151617181920212223242526272829
Across
  1. 2. the age of the dinosaurs
  2. 3. the period in which the dinosaurs came to an end and mammals took center stage
  3. 5. was a 20th century vertebrate paleontologist who focused on the study of dinosaurs
  4. 7. the period in which glaciers had formed in the pole
  5. 9. the trace or remains of organisms that lived long ago
  6. 11. some meteorites contained this
  7. 15. fossils a fossil used to date other fossils
  8. 17. these continents collided at the equator
  9. 20. the largest division of geological time
  10. 21. the scientific study of fossils
  11. 25. this animal lived in the Ice Age
  12. 26. the period where life first evolved
  13. 27. a unit of geological time into which eras are divided
  14. 28. a type of fossil that forms when sediments fill in the cavity left by a decomposed organism
  15. 29. a unit of geological time that includes two or more periods
Down
  1. 1. the ship that Charles Darwin voyaged on
  2. 4. the standard method used to divide the Earths history into manageable parts
  3. 6. there were 4 of these in all time
  4. 8. a principal that states the geoligical process that occured in the past can be explained by current geological processes
  5. 10. a subdivision of a geological period
  6. 12. the man who said we originate from apes(the evolution of theory)
  7. 13. the land mass made from the collided continent
  8. 14. the period in which earth turned green and started to grow plants
  9. 16. the period of swampy forest
  10. 18. the period in which hominids appear
  11. 19. a principal that states the geologic change occurs suddenly
  12. 20. the death of every member of a species
  13. 21. the period in which the continents came together
  14. 22. fossil a fossilized mark that is formed in soft sediment by the movement of an animal
  15. 23. a mark or cavity made in a sedimentary surface by a shell or other body
  16. 24. this period was in the ocean