Mamenchisaurus was named by Chung Chien Young in 1954. Fossils have been found in China. Mamenchisaurus may be closely related to Diplodocus or Camarasaurus . The type species is M. constructus . Mammals evolved during the Triassic period .
People are mammals.
They lived throughout the world. They lived from about 2 million years ago to 9,000 years ago, millions of years after the dinosaurs went extinct. They are closely related to modern-day Indian elephants. The tusks were used in mating rituals, for protection, and for digging in the snow for food. Much of our knowledge of mammoths is from cave drawings and from mummified mammoths found in Siberian ice.