• Cenozoic era (65 MYA to present) • Cretaceous period (146‒65 MYA) • Jurassic period (208‒146 MYA) • Triassic period (245‒208 MYA) • Paleozoic era (570‒245 MYA) • Proterozoic era (2,500‒570 MYA) • Archean era (3,800‒2,500 MYA) • Hadean era (4,600‒3,800 MYA) For example, to calculate where to mark the Cenozoic era, calculate: 65 million years times start fraction 1 yard over 46 end is approximately equal to 1.4 yards 65 million years times start fraction 1 yard over 46 end is approximately equal to 1.4 yards65 million years times start fraction 1 yard over 46 end is approximately equal to 1.4 yards 65 million years times start fraction 1 yard over 46 end is approximately equal to 1.4 yards65 million years times start fraction 1 yard over 46 end is approximately equal to 1.4 yards65 million years times start fraction 1 yard over 46 end is approximately equal to 1.4 yards65 million years times start fraction 1 yard over 46 end is approximately equal to 1.4 yards 65 million years times start fraction 1 yard over 46 end is approximately equal to 1.4 yards 65 million years times start fraction 1 yard over 46 end is approximately equal to 1.4 yards65 million years times start fraction 1 yard over 46 end is approximately equal to 1.4 yards65 million years times start fraction 1 yard over 46 end is approximately equal to 1.4 yards65 million years times start fraction 1 yard over 46 end is approximately equal to 1.4 yards65 million years times start fraction 1 yard over 46 end is approximately equal to 1.4 yards 65 million years times start fraction 1 yard over 46 end is approximately equal to 1.4 yards 65 million years times start fraction 1 yard over 46 end is approximately equal to 1.4 yards65 million years times start fraction 1 yard over 46 end is approximately equal to 1.4 yards 65 million years times start fraction 1 yard over 46 end is approximately equal to 1.4 yards65 million years times start fraction 1 yard over 46 end is approximately equal to 1.4 yards 65 million years times start fraction 1 yard over 46 end is approximately equal to 1.4 yards 65 million years times start fraction 1 yard over 46 end is approximately equal to 1.4 yards 65 million years times start fraction 1 yard over 46 end is approximately equal to 1.4 yards 65 million years times start fraction 1 yard over 46 end is approximately equal to 1.4 yards 65 million years times start fraction 1 yard over 46 end is approximately equal to 1.4 yards65 million years times start fraction 1 yard over 46 end is approximately equal to 1.4 yards65 million years times start fraction 1 yard over 46 end is approximately equal to 1.4 yards65 million years times start fraction 1 yard over 46 end is approximately equal to 1.4 yards65 million years times start fraction 1 yard over 46 end is approximately equal to 1.4 yards 65 million years times start fraction 1 yard over 46 end is approximately equal to 1.4 yards 65 million years times start fraction 1 yard over 46 end is approximately equal to 1.4 yards ≈ The Cenozoic era should be marked approximately 1.4 yards from the right end of the football field.
