One day to God is as 1,000 years the Bible says. 2Peter 3:8 Noah's day was more than 24 hours. Maybe some day God will tell us why the historic animals died prior to man's creation. I think there are many more questions that are more important to think about than prehistoric ones. Jesus said at Matthew 24:14 about these last days: "This good news of the kingdom will be preached in all the inhabited earth for a witness to all the nations, and then the end will come." Jehovah's Witnesses are working hard in working toward that end. We are preaching in 240 countries and more than 10 million people of all nationalities, religions and backgrounds are studying the Bible becoming "God's fellow workers." 1Corinthians 3:9 Jesus Christ is God's "master worker" according to Proverbs 8:30. There is nothing of more importance than the preaching of the good news at this vital time in our history. Matthew 28:19 and 20 Jesus ends the Bible book of Matthew by telling his followers: "All authority has been given me in heaven and on the earth. God, therefore, and make disciples of all the nations, baptizing them in the name of the Father and of the Son and of the holy spirit, teaching them to observe all the things I have command you. And look! I am with you all the days until the conclusion of the system of things." What a wonderful thing it is to be a part of Jehovah's purpose to preach, knowing Jesus is with us and the angels also. We are informed of this at Revelation 14:6 where we are told: "And I saw another angel flying in midheaven, and he had everlasting good news to declare to those who dwell on the earth, to every nation and tribe and tongue and people. (7) He was saying in a loud voice: 'Fear God and give him glory, because the hour of judgment by him has arrived, so worship the One who made the heaven and the earth and the sea and the springs of water.'" I now invite you to look into the international website, jw.org. See Bible Teachings > Bible Questions Answered. Watch videos such as What is God's Kingdom? Does God have a Name? Why did God Create the Earth? Why did Jesus Die? and Why Study the Bible? If you believe what you learned, you can request your FREE personal Bible study online. Thank you for this question.