Herrerasaurus ischigualastensis, skull Tyrannosaurus Rex Fossil evidence shows that Keichousaurus

Fossil evidence shows that Keichousaurus had a movable pelvis and may have given birth to live young instead of laying eggs

Until finds of other early stegocephalians and closely related fishes in the late 20th century

of Rochester

Darwinius masillae - "Ida" was discovered in 1983 and described scientifically in 2007

Parts of several Sigillaria leaves are also found on the plate

Herrerasaurus ischigualastensis, skull Tyrannosaurus Rex Fossil evidence shows that KeichousaurusHerrerasaurus (huh RARE ah SAWR us) (meaning "Herrera's lizard;" Victorino Herrera was a rancher who discovered the fossil) was a late Triassic archosaur (a reptile that was almost a dinosaur) from about 230 million years ago. It used to be thought to be a very early dinosaur and a primitive prosauropod. It was a speedy bipedal carnivore about 17 feet long, weighing roughly 440 780 pounds. It had a short neck and a large head. Three partial skeletons