Dinosaurs

A hadrosaurus is a dinosaur originally found in New Jersey. This dinosaur is listed underneath the category of Gripper, since it doesn't HAVE any teeth, which also means that it is an omnivore.

In the Mesozoic, just as today, carnivores couldn't survive without there being far more herbivores than carnivores. For example, the most common dinosaurs in the Cretaceous were the herbivorous dinosaurs called hadrosaurs. In the Jurassic, the most common dinosaurs were sauropods, which were also herbivores.

Giganotosaurus was tallest and meanest dino even though it did not have the jaw power like a T-Rex but had powerful claws.

i have no clue

It's the bone that makes them laugh when you tell them a joke.

Despite its large thought it was thought to eat fish because of the shape and position of its teeth.

No, stromatolites are bacterial mats and have been around for at least 2,700,000,000 years.

Trilobites only appear in the fossil record about 526,000,000 years ago.

We don't know for sure.

The asteroid theory is one example of many theories. Some scientists think one asteroid wasn't enough to kill them all, while others don't think an asteroid killed them at all.

We honestly do not know.

Extinction is caused by both.

If there is a natural disaster, it can wipe out whole species. For example, climate changes such as the end of the ice age. There were some mammals that evolved into animals we know today and there were some that could not evolve fast enough and did not survive.

Man can cause extinction by over-hunting animals or destroying their habitats.

For example, the Dodo was a flightless, defensive bird which stood no chance when man colonised their island.

Within the field of evolutionary biology, archaeopteryx is considered the "missing link" between dinosaurs and birds in the evolutionary process. Although it is widely held to be true, there may still be other undiscovered fossils that yield an even closer link between dinosaurs and birds.

Archaeopteryx is considered the most primitive bird. It is, however, an intermediary form and can therefore be classified as both a dinosaur and a bird since its features are characteristic of both types of animal. It has more in common with dinosaurs known as theropods, than it does with modern birds.

Although the mating rituals of velociraptor are not known, the dinosaur reproduced in a manner like most other vertebrates. Compared with modern animals their reproduction was probably most like that of birds.

A male velociraptor would fertilize a female with his sperm, eggs would then develop in the female's body and she would lay the eggs most likely in some sort of nest. After some period of time baby velociraptors would then hatch from the eggs.

Yes. They were created when other animals which lived on land were created. They weren't violent meat-eaters at first, and footprints of man have been found in the same rock layer as that of dinosaurs.

Yes. Some dinosaurs had teeth and claws that were well suited for catching fish, and some fossils have been found with fish remains in their stomachs.

probably small to medium sized dinosaurs like the dromeosaurid utahraptor. citipati and avimimus, maybe small species of allosaurus, small tyrannosaurids like raptorex, dilong, guanlong and alectrosaurus. some species of ornithomimidae. maybe small ceratopsidae like koreaceratops, yinlong and hualianceratops. herrerasaurus and ceolophysis also may have jumped

About 100 years ago people from a small village in the heart of the Congo jungle in Central Africa started reporting sightings of a very strange animal in or near the Congo river: a large creature, about the size of an elephant, with brown or gray skin, a long neck and tail, and a small head. Several foreigners also reported having seen the creature. All the descriptions matched that of the extinct dinosaur, Apatosaurus. Although the real dinosaur was a plant eater, local people said this creature had attacked people. They linked it with ancient rock paintings nearby, which showed a long- necked, four footed beast known as moke'le'- mbe'mbe', meaning "rainbow". Since these early sightings, scientific investigations have brought back specimens of droppings and casts of huge footprints. But despite these findings and other evidence, the esistence of the moke'le'- mbe'mbe' has yet to be proven.

The is no such thing as a sea dinosaur!
They are known as marine reptiles
But if your asking for the biggest it is Shonisaurus the giant icthyosaur or 'Fish reptile'
The largest plesiosaur is Elasmosaurus
The largest Pliosaur is Kronosaurus
Shonisaurus grew up to 15m long
Elasmosaurus grew up to 14m long
Kronosaurus grew up to 14m long
The largest sea mammal was basilosaurus mistakenly called 'king reptile' It was actually a whale growing up to 15-23m long

Edit: People often mistake plesiosaurs and pliosaurs as being dinosaurs. They are not.

There are however dinosaurs that have semi aquatic lifestiles.

Birds are a type of theropod dinosaur, so that makes Penguins ''sea dinosaurs''.

There are also the extint hesperornithiformes that might of had a similar lifestyle.

Dinosaurs lived from 231.4 million years ago to 65.5 million years ago, which falls entirely in the Mesozoic era. The Mesozoic is divided into the periods, the Triassic, Jurassic, and Cretaceous.

It could be a very young Grizzly Bear, maybe an immature coyote or wolf, or perhaps an Emperor Penguin at some stage in it development. It could be a nice salmon or a super King Crab or Lobster, perhaps its a snake or a bird of any sny number of species at different points of their development. It could be a young human being, it might be my great-grand-daughter.

the highest knowen temperature was 72 celcius around 68-63 mya

Ornithischians with a hip structure similar to that of present day birds.

Dinosaurs spent their time eating, migrating, mating, or defending their territories. What they did was related to the time of year. For example, they mated in the spring and migrated in the late fall.

If you mean living animals today, then MOST definitely other reptiles, and birds especially, as the birds evolved from THEROPOD dinosaurs - some theropod dinosaurs looked almost exactly like birds, where you could simply label them as birds.

Try looking at an emu or a cassowary and compare it to a velociraptor and other feathered dinosaurs. Also, compare a chicken to the maniraptora dinosaurs. Look at their feathers, their feet and how they walk. The resemblances are stunning but shouldn't be surprising as birds arose from the maniraptoras.

The Galapagos Tortoises, although not descendant of dinosaurs, have a good resemblance to the herbivorous, ornithischian dinosaurs, such as the ankylosaurus. Though tortoises sprawl and, unlike the dinosaurs, they don't walk upright.

A Komodo dragon has that classical, dull brownish grey look of a dinosaur, though it sprawls. A chameleon has plates on its back, which are similarly seen in a stegosaurus (again, it sprawls, unlike the dinosaur). They say a T-Rex's bite and mouth was comparable to a crocodile's.

Incidentally, a rhinoceros, which is a mammal like you and I, has a remarkable resemblance to a triceratops (the colour, the horns). Not to mention, both walk upright, UNLIKE the above reptiles I mentioned.