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






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






3. 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






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






5. First crabs and ferns.






6. First toothed fish and nautiloids.






7. First amniotes evolve.






8. Possible early land animals.






9. First synapsids evolve.






10. First cephalopods and chitons.






11. 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.






12. First therapsids evolve.






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






14. Fossilization of the Burgess Shale.






15. First therapsids evolve.






16. First jawless fishes.






17. First agnathan fish.






18. First diapsids evolve.






19. First crabs and ferns.






20. The evolution of the first reptiles.






21. Possible early land animals.






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






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






24. 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.






25. 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






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






27. First synapsids evolve.






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






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






30. First jawless fishes.






31. First of many modern groups - including tetrapods.






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






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






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. First large sharks - ratfish and hagfish.






36. First of many modern groups - including tetrapods.






37. First cephalopods and chitons.






38. First large sharks - ratfish and hagfish.






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






40. First graptolites.






41. 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.






42. First graptolites.






43. First agnathan fish.






44. The evolution of the first reptiles.






45. Fossilization of the Burgess Shale.






46. First diapsids evolve.






47. First amniotes evolve.






48. First toothed fish and nautiloids.