DOLPHIN & BLUE WHALE

NATURE & ANIMALS VIDEO

Acrocanthosaurus

More About Acrocanthosaurus
Acrocanthosaurus was a large, meat-eating dinosaur. Acrocanthosaurus means "high-spined lizard." No one knows what color this, or any dinosaur, was.
Anatomy: Acrocanthosaurus was 30-40 feet (9-12 m) long and weighed about 5,000 pounds (2300 kg). This theropod dinosaur had a big head, with a 4.5-foot (1.4 m) long skull and 68 thin, sharp, serrated teeth. It had 17-inch (43 cm) spikes extending from its vertebrae along the neck, back, and tail. These spikes may have been covered with skin, forming a thick, fleshy sail along its back. This predator had powerful arms; each hand had three fingers equipped with long, sickle-like claws.
When it Lived: Acrocanthosaurus lived during the early Cretaceous period, about 115-105 million years ago.
Fossils: Acrocanthosaurus fossils have been found in Oklahoma, Texas, and Utah (in the USA). Many fossilized tracks have also been found.

NATURE

For 25 years, NATURE has been the benchmark of natural history programs on public television, capturing the splendors of the natural world, from the African plains to the Antarctic ice.NATURE has won more than 360 honors from the television industry, parent groups, the international wildlife film community, and environmental organizations, including eight Emmys, two Peabodys and the first award given to a television program by the Sierra Club. Most recently, "The Queen of Trees" (2006) won a Peabody and, at the Banff World Television Festival, the NHK President's Prize, which recognizes excellence in high-definition programming.NATURE's 25th season begins on November 5 with Chimpanzees: An Unnatural History, which details decades of American chimpanzees' use for medical and entertainment purposes, as well as extraordinary efforts underway to give survivors a second chance at a life of freedom. On November 12, NATURE travels to the extreme conditions of Earth's southernmost continent to explore how the diverse Penguins of the Antarctic are dealing with the effects of climate change. And November 19 brings a breathtaking look at the stunning natural beauty of Christmas in Yellowstone, where foxes, wolves, coyotes, elk, bison, bears and otters make their way through the park's most challenging season.