Lystrosaurus, skull, a dicynodont Triceratops during the late Carboniferous to

during the late Carboniferous to early Permian periods

1/4 to 3/4 inches in size

the foot nearly three inches and the step thirty inches

The slate is mainly used for floor slabs and table tops

archaeology and human origins

Lystrosaurus, skull, a dicynodont Triceratops during the late Carboniferous toLystrosaurus (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