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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 Ordovician and the end of the Cambrian period.






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






3. First graptolites.






4. First agnathan fish.






5. First toothed fish and nautiloids.






6. First large sharks - ratfish and hagfish.






7. First synapsids evolve.






8. Fossilization of the Burgess Shale.






9. 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






10. 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.






11. First therapsids evolve.






12. First crabs and ferns.






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






14. First diapsids evolve.






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






16. 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.






17. First crabs and ferns.






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. Plants and arthropods colonize the land. Sharks evolve.






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






21. First amniotes evolve.






22. First synapsids evolve.






23. First of many modern groups - including tetrapods.






24. First graptolites.






25. First of many modern groups - including tetrapods.






26. First agnathan fish.






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






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






29. First large sharks - ratfish and hagfish.






30. First jawless fishes.






31. First therapsids evolve.






32. First amniotes evolve.






33. Fossilization of the Burgess Shale.






34. First jawless fishes.






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






36. First toothed fish and nautiloids.






37. 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






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






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






40. Possible early land animals.






41. First cephalopods and chitons.






42. The evolution of the first reptiles.






43. Possible early land animals.






44. First cephalopods and chitons.






45. The evolution of the first reptiles.






46. First diapsids evolve.






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






48. 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.