Amphicoelias fragillimus

Amphicoelias fragillimus might have been the longest dinosaur because he was 130 to 200 ft. long and weighed 135 tons.  His name means biconcave.  The only bones discovered that go to the dino are a vertebra and a femur.  They were found in the 1870's, but then all of the bones got lost.

Alxasaurus

Alxasaurus lived in China.  They had a long neck and long, narrow claws.  He was an herbivore.  It's claws may have been used to pull branches closer to their mouths and also may have been used for self-defense.  A full skull of Alxasaurus has never been found.

South Dakota trip

We took our trip to South Dakota in July.  It was fun.  The mammoth site has a short-faced bear and both types of mammoth.  They have only found 15 short-faced bears in the world and this is the only place in the world where both types of mammoth have been found.

Mammoth Dig Site

I am going to the Mammoth Dig Site in South Dakota next month.  At this site they have found Ice Age camels, llamas, giant short-faced bears,wolves, coyotes, prairie dogs, fish, mollusks, and many more!  They have found 52 North American Columbian Mammoths and 3 Wooly Mammoths - this is the only site in the world where both species have been found together.

Maiasaura

Maiasaura means "good mother lizard."  A maiasaura was 30 feet long and weighed 8000 pounds.  The name was chosen because she weighed so much she didn't sit on her nest, she just put leaves on her eggs so she wouldn't crack them trying to keep them warm.  There were as many as 10,000 maiasaura in a herd.


Here is a video of a song I really, really like from www.dinofun.com

Cryolophosaurus

Cryolophosaurus lived in Antarctica!  It is the first known dinosaur that lived on Antarctica.  Cryolophosaurus had an unusual sheetlike crest and no feathers and he ate meat.  He was 21 and a half feet long and weighed 1000 pounds.  He also had three fingers, three toes, and a neck about as big as the neck of a T. Rex.

Diplodocus

Diplodocus is 82 feet long and weighed 16 tons.  He is like a Brachiosaurus with a longer tail and smaller body.  He is slow and also uses his tail for balance.  Diplodocus is not very tall compared to Brachiosaurus, though, and must have had tough neck and tail bones.