1. 1  a. A regional or social variety of a language distinguished by pronunciation, grammar, or vocabulary, especially a variety of speech differing from the standard literary language or speech pattern of the culture in which it exists: Cockney is a dialect of English. 2  b.
Dino Myths. Among the longest land animals! Diplodocus was a long-necked, whip-tailed giant, measuring about 90 feet (27 m) long with a 26 foot (8 m) long neck and a 45 foot (14 m) long tail, but its head was less than 2 feet long. It was among the longest land animals ever.
Prior to the new analysis, the oldest known dinosaur fossils belonged to small, lightly built, meat-eating creatures found in South America that dated to around 230 million years ago. (See pictures: Oldest Dinosaur Nests Found in South Africa.) Oldest Dinosaur Still a Mystery. Very little is known about Nyasasaurus. Based on the fossils, scientists estimate it was between 6.5 to 10 feet (2 to 3 meters) long, including its tail. But no skull bones have been found yet, so it's unclear what the animal ate or even whether it walked on two legs or four.