H

Habitat it is a space (which includes food, water and shelter) appropriate for the survival and reproduction of an organism.

Hadrosaurids it is a group of dinosaurs from the late Cretaceous era that was ornithischian, herbivorous and had a broad, flat beak that earned them the nickname of "duck-billed dinosaurs". They might walk on either two or four legs. The maiasaur is element of the hadrosaurid family.

Hadrosaurus it was a duck-billed dinosaur, a 23 to 32 feet (7 to 10 m) long ornithischian from the late Cretaceous era.

Hainosaurus One of the largest mosasaurs that ever lived.

Half-life it is of a radioisotope is the quantity of time it takes for half of the radioisotope to decompose.

Halticosaurus was a late Triassic dinosaur from about 222 million years back. It was a very early dinosaur and its categorization is uncertain

Haplocanthosaurus it was a sauropod dinosaur from the late Jurassic era, about 156-145 million years back

Harpymimus was a theropod dinosaur, a bipedal meat-eater that lived throughout the Cretaceous period, about 119- 97.5 million years before.

Herbivores it is an animals that eat plants. A large amount of dinosaurs were herbivorous (plant-eating).

Herding it means moving collectively as a group which may be a means of protection

Hesperosaurus it is originally called as Hesperisaurus. This is a ancient stegosaurid dinosaur that had a single row of rounded plates operation down its back; it also had four bony spikes at the last part of the tail.

Heterodontosaurus This "different-toothed" dinosaur was a dentist's frightening.

Heterotroph is a living thing that eats other living things to stay alive.

Hevuannia it is another close relative of Oviraptor.

Hironosaurus was big, duck-billed dinosaur from the late Cretaceous era, about 97.5-65 million years before.

Homalocephale This herbivore had a very flat--and extremely thick--skull.

Huaxuagnathus One of the largest dino-birds of its instant.

Hylaeosaurus was an unbreakable, quadrupedal, plant-eating dinosaur, an ankylosaur.

Hypselosaurus this titanosaur's eggs were a base in diameter.

Hypsibema is a uncertain genus of plant-eating dinosaur; it perhaps a duck-billed dinosaur

Hypsilophodon This man-sized herbivore liked to eat and sprint.