Thom Holmes "The Prehistoric Earth - March onto Land: The Silurian Period to the Middle Triassic Epoch"
Published by Chelsea House Publications | May 2008 | ISBN: 0816059594 | PDF | 193 pages | 7 MB
"March Onto Land" depicts life's migration from the sea to the land and the rise of the first terrestrial organisms. Following the appearance of the first land plants and terrestrial invertebrates, some animals with backbones ventured out of the water. After gaining a toehold on dry land, terrestrial vertebrates grew in number and diversity to become the most important large-bodied organisms on the planet.