Life Before Dinosaurs http://dinosaursandfossils.webs.com/apps/photos/ Life Before Dinosaurs Dimetrodon Dimetrodon was a half mammal, half reptile with an unusual sail on its back. http://dinosaursandfossils.webs.com/apps/photos/photo?photoID=5160352 5160352 Chasmatosaurus This early crocodile hunted down fish in the oceans and Lystrosaurus on land. http://dinosaursandfossils.webs.com/apps/photos/photo?photoID=5894132 5894132 Dimetrodon 2 Dimetrodon was top predator in the early permian period. http://dinosaursandfossils.webs.com/apps/photos/photo?photoID=5894133 5894133 Sea Scorpion Sea Scorpions like this were among the first creatures to crawl out onto land. http://dinosaursandfossils.webs.com/apps/photos/photo?photoID=5894134 5894134 Scutosaurus Scutosaurus was a giant relative of the turtle with bony ridges on its back for protection. http://dinosaursandfossils.webs.com/apps/photos/photo?photoID=5894147 5894147 Meganeura This giant dragonfly ruled the skies of the Carboniferous period feeding on smaller insects. http://dinosaursandfossils.webs.com/apps/photos/photo?photoID=5894135 5894135 Trilobite (fossil) Trilobites were among the first creatures to swim the ancient oceans, they were mostly a food source for other creatures such as Anomalocaris. http://dinosaursandfossils.webs.com/apps/photos/photo?photoID=5894148 5894148