Maiasaurs were herbivorous. Adults weighed roughly 3-4 tons. They probably ate about 200 lb. of food each day.

Many Maiasaura nests have been found at two sites, Egg Mountain and Egg Island. At the time of the dinosaurs, each of these sites was an island. Although islands are rather limiting in space, the nests are usually found 25-30 feet apart.

The sharp serrated teeth of a small dinosaur called Troodon have been found in the nesting areas of maiasaurs.

Large numbers of bones found at one location in Montana indicate that there existed a herd of maiasaurs of nearly 10,000 individuals. These individuals varied in size from 9' to 25' in length.

The dinosaur nests at both of the Egg Mountain locations have been found at three different depths. Several layers of sandstone were deposited between the nesting horizons.

The bones of most newborn birds are not fully ossified (hardened into bone). The ends are still relatively soft and spongy and made of cartilage. As a result, newborn birds can stand up only momentarily. Their bones will not support them.

An adult Maiasaura reached a size of 25-30 feet in length. It weighed 3-4 tons.

The shells found in the nests of the Maiasaura are all broken up.

The front teeth of many dinosaurs like Maiasaura are very interesting. There is a heavy enamel layer on the outside of the upper teeth, but that very same layer is on the inside of the lower teeth. Therefore as the teeth come together, a self-sharpening effect takes place. The teeth become like chisels.

The shells found in the nests of Orodromeus are not all broken up. The lower egg shell is usually intact.

The presence of large numbers of bones at one site suggest that maiasaurs were found in herds up to 10,000 in number.

The bones of the hatchlings of Maiasaura are not fully ossified. The ends are still relatively soft and spongy and cartilaginous.

Examination of the embryos of Maiasaura show wears on the front teeth. This has occurred before hatching.

At birth, maiasaurs is about 12 inches in length. Bones have been found in the nests of maiasaurs that were over 3 feet in length. This is very common.

The bones of the hatchlings of Orodromeus are fully ossified. That means that the ends of the bones are fully developed and very strong.

Most of the dinosaurs ate plants. A rock that contains dinosaur bones also contains fossil pollen and spores that indicates many types of plants existed during the Mesozoic Era. Many of these plants had edible leaves, including evergreen conifers, ferns, mosses, horsetail rushes etc.

Generally dinosaurs are named after a trait body aspect, after the place where they were originate, or after a human being involved in the discovery. Usually the name consists of two Greek or Latin words; like the genre and the species name. For instance, the Greek and Latin combination (binomen) Tyrannosaurus rex means "king of the tyrant lizards."

Most Fat Dinosaurs swallow their food. These animals take more time for eating and their digestion process even becomes longer. Larger sauropods used their teeth for grabbing food and their teeth fall down often.

The smallest known dinosaur in the world is Compsognathus, which lived in Europe at the period of late Jurassic. It was about the size of a chicken and also believed,it have eaten insects, lizards and also some other small animals.

The oldest dinosaur types are known from Argentina and Brazil and it is about 230 million years old. The most primitive type is Eoraptor, was a small meat-eating dinosaur. Because Eoraptor's skeleton may have some advanced skeletal features, older dinosaurs may yet be found.

The fastest dinosaurs were Orinthomimus, such as Dromiceiomimus. It probably runs at speeds of up to 60 kilometres per hour.

The earliest known dino-bird which lived during the age of dinosaurs is Archaeopteryx, where lived in Europe about 155-150 million years ago.

Dinosaurs lived and evolved for over 185 million years until they became vanished. The cause has not been demonstrated yet, but many believe that an asteroid Over 9 miles wide hit the earth In the Gulf of Mexico.

One of the largest dinosaurs that ever lived, Tyrannosaurus rex was a violent carnivore. Scientists believe this powerful killer could eat up to 500 pounds (230 kilograms) of meat in one bite.

The longest dinosaur was Seismosaurus, which measured over 40 metres, as lengthy as five double-decker buses. It was correlated to diplodocus, which for a long time held

Troodon or the "wondering tooth" is the smartest dinosaur (fossil). It had the largest brain size-to-body-size ratio of all recognized. It's believed to have been as elegant as modern-day birds. This species was a miniature dinosaur, about 2.Its 6.5 ft in length, 1 meter (3 ft) tall and weighed 60 kg (130 lb).

This amazing genus of dinosaurs, with bony plates, studs and spikes lining its entire back, even its eyelids had spike, is measured the "best defense" dinosaur. even its tail had a thick knob of bone at the end of it, Ankylosaurus might have weighed over 6,000 kilograms (13,000 lb).

Ornithomimus is the fastest of all dinosaurs, commonly called "bird mimic". It could run about 40 to 50 miles per hour. This genus of dinosaur that looks like an ostrich was 12 ft (3.5 meters) long, 7 feet (2.10 meters) high and weighed around 100-150 kg.

Microraptor is the smallest dinosaur in the world which is about 40 cm long. It’s a bird like dinosaur which was discovered in china. It spends most of the time in trees and it’s feet is well adapted for climbing. This dinosaur resembles like a bird in its features.

The newly discovered, ceratopsian dinosaur, had four-foot long horns over each eye, which was 22 feet long and weighed four to five tons.

Some dinosaurs like Corythosaurus and Parasaurolophus may communicate both visually and vociferously. It might have been used to intensify grunts. An angry triceraptor may communicate silently by bull shaking his head.