Lystrosaurus, skull, a dicynodont Triceratops archaeology and human origins

archaeology and human origins

Atlasaurus imelakai was a quadrupedal herbivorous sauropod

This plant-eater was about 11 feet (3

between 155 and 145 million years ago

1/4 to 3/4 inches in size

Lystrosaurus, skull, a dicynodont Triceratops archaeology and human originsLystrosaurus (meaning "shovel lizard", was a genus of Late Permian and Early Triassic Period dicynodont therapsids, which lived around 250 million years ago in what is now Antarctica, India, and South Africa. Four to six species are currently recognized, although from the 1930s to 1970s the number of species was thought to be much higher. Being a dicynodont, Lystrosaurus had only two teeth, a pair of tusk like canines, and is thought to have had a