Dinosaurs

It really depends, but from scientific theory we guess the Velociraptor.

This isn't true. Not all boys love dinosaurs.

Iridium is the rare element that is said to have caused an ancient health crisis (extinction of the dinosaurs).

Diplodicus. up to 130 feet long.

Brackish they live in brackish

Brackish water is a mixture of salt a fresh water like for example the....... Chesapeake bay

fat dinosaurs fat caveman fat people

theres nothing called priassic,its triassic

Ferns quickly grew where all the other plants had died; this is called a fern spike. The climate was probably somewhat cooler for hundreds of years because of remnants of dust from the asteroid impact still floating in the atmosphere. Other than that, the climate was probably similar to before the impact. The surviving animals included most land invertebrates that existed before, as well as birds, mammals, lizards, snakes, amphibians, and crocodilians, and in the ocean, most fish, sharks, and invertebrates survived. It took millions of years for mammals to fill the niches left open by the dinosaurs and other reptiles.

No, there were no people when dinosaurs were alive. The Flintstones was not a documentary.

child services would not let the parent have their kid back because that kid could die because of their parents

Theropod dinosaurs share many features with birds. Some include bones with honeycomb like air pockets that made them lighter, wishbones, and feathers. Further evidence comes from fossils like that of Archaeopteryx, which had features of dinosaurs and birds.

The bones articulate as do the bones of birds. The DNA resembles that of birds. Some impression fossils show feathers, a bird specialty.

Probably only one line of dinosaurs survived to evolve into modern birds; the dromaeosaurs being the most likely. The challenge of size is that the bigger you are, the fewer of you there are, so catastrophes tend to wipe out the giants first, then the mid-sized, and possibly some of the little ones survive.

Also, those huge and impressive creatures tend to be at the end of their specialization and can't easily adapt to new conditions, while there may have been small, generalized dinosaurs whose fossils we haven't even found which, after scrounging along the margins, suddenly found themselves ideally positioned to exploit the new environment.

No, the parasaurolophus was not a predator; it was an herbivorous dinosaur. This dinosaur primarily fed on vegetation, using its long crest for communication and possibly for display purposes. Its diet consisted of leaves, ferns, and other plant materials, distinguishing it from carnivorous dinosaurs that hunted for meat.

Archeopteryx lithographica was the earliest known bird that lived in what is now Germany nearly 160 million years ago. Since fossils of it have only been found in the Solnhofen limestones of Germany, dating from about the same age, it is hard to say exactly how long the species itself lasted: we cannot claim to know how long Archeopteryx existed before those fossils, likewise after; hence, the reasons for its extinction are unknown. However, it probably was the same reason that many other species go extinct: simple outcompetition over time.

this theory couldn't be true because then the dinosaurs would have benn up-right, or standing up, not on their side.

It suggests that a dinosaur simply walked by, and died anywhere, maybe hundreds of miles away.

The average raptor's top speed was around 40 miles per hour.

Neither...They were reptiles.

dinosaurs were nether amphibians or mammals they were all reptiles, though they are more closely related to birds.

Archaebacteria

yes they are often found in bolders at the bottom of the river

The age before the dinosaurs, also known as the mesozoic era, was the paleozoic era, which started apprx. 570 million years ago and ended apprx. 245 million years ago

Marine reptiles were not technically "dinosaurs" but some were exceptionally large, such as the pliosaurs, pleisosaurs, icthyosaurs, and mososaurs.

These included:

Archelon - giant turtles

Askeptosaurus - giant eels

Ichthyosaurus - giant fish-like creatures

Liopleuradon - one of the largest

Mosasaurus - one of the first identified from a fossil, a snakelike sea lizard

Stomatosuchus - 36-foot prehistoric crocodile remarkably similar to modern species

Tylosaurus - a sleek 50-ft swimming predator

(see the related link for others)