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Paleozoic History Timeline

Subjects : trivia, history
Instructions:
  • Answer 48 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Beginning of the Cambrian period - the Paleozoic Era and the Phanerozoic (current) Eon. End of the Ediacaran Period - the Proterozoic Eon and the Precambrian Supereon. Time since the Cambrian explosion the emergence of most forms of complex life - in






2. Possible early land animals.






3. Beginning of the Silurian and the end of the Ordovician period.






4. Fossilization of the Burgess Shale.






5. First of many modern groups - including tetrapods.






6. First toothed fish and nautiloids.






7. Beginning of the Carboniferous and the end of Devonian period. Amphibians diversify.






8. The evolution of the first reptiles.






9. Possible early land animals.






10. First amniotes evolve.






11. Beginning of the Devonian and end of the Silurian period.First insects.






12. First large sharks - ratfish and hagfish.






13. First therapsids evolve.






14. End of Carboniferous and beginning of Permian Period. By this time - all continents have fused into the supercontinent of Pangaea. Beetles evolve. Seed plants and conifers diversify along with temnospondyls and pelycosaurs.






15. First cephalopods and chitons.






16. First amniotes evolve.






17. First diapsids evolve.






18. Permian mass extinction. End of Permian Period and of the Palaeozoic Era. Beginning of Triassic Period - the Mesozoic era and of the age of the dinosaurs.






19. First diapsids evolve.






20. Plants and arthropods colonize the land. Sharks evolve.






21. First jawless fishes.






22. Permian mass extinction. End of Permian Period and of the Palaeozoic Era. Beginning of Triassic Period - the Mesozoic era and of the age of the dinosaurs.






23. First synapsids evolve.






24. First toothed fish and nautiloids.






25. First creature took a breath of air.First ray-finned fish and land scorpions.






26. First therapsids evolve.






27. First graptolites.






28. First cephalopods and chitons.






29. Beginning of the Silurian and the end of the Ordovician period.






30. First large sharks - ratfish and hagfish.






31. First jawless fishes.






32. Beginning of the Carboniferous and the end of Devonian period. Amphibians diversify.






33. First agnathan fish.






34. End of Carboniferous and beginning of Permian Period. By this time - all continents have fused into the supercontinent of Pangaea. Beetles evolve. Seed plants and conifers diversify along with temnospondyls and pelycosaurs.






35. The evolution of the first reptiles.






36. Fossilization of the Burgess Shale.






37. Plants and arthropods colonize the land. Sharks evolve.






38. Beginning of the Ordovician and the end of the Cambrian period.






39. First creature took a breath of air.First ray-finned fish and land scorpions.






40. First synapsids evolve.






41. First crabs and ferns.






42. Beginning of the Cambrian period - the Paleozoic Era and the Phanerozoic (current) Eon. End of the Ediacaran Period - the Proterozoic Eon and the Precambrian Supereon. Time since the Cambrian explosion the emergence of most forms of complex life - in






43. Beginning of the Devonian and end of the Silurian period.First insects.






44. First crabs and ferns.






45. First of many modern groups - including tetrapods.






46. Beginning of the Ordovician and the end of the Cambrian period.






47. First agnathan fish.






48. First graptolites.