1. Dinosaurs: Dinosaurs are a group of extinct reptiles that dominated the Earth for over 150 million years. The extinction event that wiped out the dinosaurs, known as the Cretaceous-Paleogene extinction event, occurred around 66 million years ago. It is widely believed that an asteroid impact or volcanic eruptions were the cause of this extinction.
2. Woolly Mammoth: The Woolly Mammoth (Mammuthus primigenius) was a large mammal that was widely distributed during the Pleistocene epoch. Mammoths were covered in thick fur and had long, curved tusks. They became extinct around 10,000 years ago, at the end of the last ice age.
3. Saber-toothed Tigers: Saber-toothed Tigers (Smilodon spp.) were a group of large, carnivorous mammals that lived during the Pleistocene epoch. They were characterized by their long, sabre-like upper canine teeth. Saber-toothed tigers became extinct around 10,000 years ago.
4. Dodo bird: The Dodo bird (Raphus cucullatus) was a large, flightless bird that was endemic to the island of Mauritius in the Indian Ocean. Dodos were hunted to extinction by humans, who arrived on the island in the 16th century. The last recorded sighting of a Dodo bird was in 1662.
5. Passenger Pigeon: The Passenger Pigeon (Ectopistes migratorius) was once one of the most abundant bird species in North America. Flocks of Passenger Pigeons could darken the sky during their migrations. However, due to overhunting and habitat loss, the Passenger Pigeon became extinct in 1914.