Birds evolved from dinosaurs, and some dinosaurs were warm-blooded. Mammals existed at the same time as dinosaurs, and most dinosaurs were vegetarian. Many dinosaurs had some form of intelligence as well.


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What are some dinosaur facts?

Birds evolved from dinosaurs, and some dinosaurs were warm-blooded. Mammals existed at the same time as dinosaurs, and most dinosaurs were vegetarian. Many dinosaurs had some form of intelligence as well.

Modern species of birds evolved from a common feathered ancestor, the theropod, starting around the end of the Jurassic and Cretaceous periods. Even though modern reptiles are cold-blooded, which means that their body temperature fluctuates with the surrounding climate, most carnivorous dinosaurs were more likely to be warm-blooded because of their predatory lifestyle, which is why birds are also warm-blooded. Meat-eating predators like the Tyrannosaurus rex and Giganotosaurus are rare compared to the amount of dinosaurs that had a vegetarian diet. Paleontologists speculate that herbivorous dinosaurs like the hadrosaurs, ornithopods and sauropods grazed on vegetation in herds like modern cattle graze in pastures.

The mammals that lived during the same time period as dinosaurs lived in treetops far away from predators during most of the Mesozoic Era. These mammals were small and furry and looked like mice. Other mammals, such as the 50-pound Repenomamus, hunted dinosaurs. Hunters such as T. rex and Troodon had more grey matter than herbivores like the stegosaurus. These predators had more thinking power than their prey and had a keen sense of coordination and heightened senses.

 

What was the largest carniverous dinosaur?

The largest known carnivorous dinosaur is the Spinosaurus, which is so named thanks to the gigantic spikes that run down the dinosaur's back. These spikes form a "sail" that likely evolved to ward off enemies rather than predators. The Spinosaurus was likely too large to be preyed upon by other dinosaurs.

Based on fossil evidence, scientists have estimated that the average Spinosaurus may have been between 52 and 59 feet long, with the ability to augment its vertical size by extending its sail. It is also possible that the dinosaur, which is said to be larger than T. Rex, may have been able to reach a total mass of almost 10 tons.

What was the longest dinosaur?

Though there have been a few instances of scientists purporting to have found larger specimens, the longest known dinosaur that is widely accepted by paleontologists seems to be the Diplodocus, a type of sauropod dinosaur with a long neck and long tail that is said to have measured as much as 175 feet in length. There seems to be some controversy and debate around the question of which dinosaur is truly the longest, with scientists introducing competitors such as the Seismosaurus, which was once thought to be a distinct species but was eventually found to be a very large Diplodocus specimen. The Seismosaurus' discovery was announced in 1991, but its existence as a unique species was debunked just over a decade later, a fact that was announced at an academic event in 2004.

What was the largest dinosaur ever?

Most paleontologists believe that the Argentinosaurus was the largest dinosaur to have ever lived. It may have been the largest land animal to have ever existed.

Although a complete skeleton has not been found, researchers theorize that the animal could have measured up to 115 feet long and weighed up to 110 tons. This is based primarily on the large femur and backbone found by a rancher in 1987 in Argentina. Both fossil fragments were almost the size of a full-grown man. The specimen was described and announced in 1993, suggesting that the fossils dated back to the late Cenomanian faunal stage of the Cretaceous period, around 94 to 97 million years ago.

What does the word "dinosaur" mean?

The word "dinosaur" is derived from Greek words; it loosely translates as "terrible lizard" from the root words "deinos," meaning "terrible" or "fearfully great," and "sauros," meaning "lizard" or "reptile." Sir Richard Owen, the man who created this taxon, intended the word "terrible" to imply something awe-inspiring and magnificent rather than something scary and terrifying.

What is a baby dinosaur called?

Dinosaurs are hatched from eggs, therefore new baby dinosaurs are called hatchlings, just like their reptile cousins the turtles and crocodiles. Young dinosaurs, beyond the hatchling stage, are referred to as juveniles.

Fossilized dinosaur eggs have been found all over the world and they come in a variety of sizes. The largest egg found was 19 inches long and shaped like a football. The smallest egg discovered was about the size and shape of a tennis ball. Dinosaurs laid clusters of eggs in nests they covered with plants. The plants both hid them from predators and kept the eggs warm.

These lines have been taken from google search and https://www.reference.com

 

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