Dinosauria!
CELEBRATING THE SAUROPODS!
 Apatosaurus, Diplodocus & Seismosaurus!
Sauropods or "Brontosaur type" dinosaurs
were the largest of all the dinosaurs that we know of today and all were plant eaters.

SAUROPODS had a rather stocky body, long flexible neck and a head that was very small in comparison to the body. The jaw was long and contained rows of thin, leaf-like teeth for chopping up plant material. Some scientists believe that they had more than one stomach, much like a cow of today, where digestion of the plant material took place in stages.
The Seismosaurus is the largest of all the "Brontosaur type" dinosaurs and is possibly the largest of all animals known to have ever lived on land or in the water.
The front legs of these animals were very thick and heavily built and they had five toes on their feet like the elephant that we find today. The hind legs were about twice as long and big as the front legs. The animal weighed about 20 tons (40,000 pounds) when full grown. Scientists believe that they herded together like many animals today, with the adult animals guarding the smaller, younger ones against predators. (Can you imagine a herd of 20 or 30 animals? Wow!)
Their body is notable from other dinosaur families as well as their size. It is almost barrel-shaped with very long necks and very long tails. They needed the very thick and sturdy legs to get around.
It is believed that the animal didn't move very fast, only about 10 mph at a run, because their knees were not that flexible, so they walked sort of stiff- legged like an elephant. Their tremendous size kept them out of the reach of animals that would otherwise feed on them.
Scientist used to think that they were water-dwellers, because they were so big. (How could something that big possibly walk around without the support of water?) But their feet are not the type of feet of water dwellers. They would have gotten stuck in the muddy bottom of lakes, rivers and swamps of the time. They did not have wide spreading toes like Tyrannosaurus Rex and other types of dinosaurs that lived in and around the swamps of the Mesozoic Era. Now it is believed that the sauropods lived in great pastures near woodlands and forests and grazed on tree tops like we see giraffes do today in the wild in Africa and in our zoos.