Were all dinosaurs big?
No, but you might think so because there are more fossils of large dinosaur bones than small ones. This is because small bones are more likely to be lost to scavengers and to weathering than large bones. Paleontologists think that there were many more small to medium dinosaurs than large ones, but their remains rarely fossilized.
Are the skeletons of Yangchuanosaurus and Tuojiangosaurus real bone?
No, they are casts made from the real fossil bones saved for scientific study in China.
How smart were dinosaurs?
The only thing we have to go on is the generally small brain size with respect to body size, compared to mammals. We look to the birds, which are quite intelligent and display complex behavior. If birds are dinosaurs, then perhaps these dinosaurs had bird-like intelligence of a slightly lesser degree.
Did people ever meet dinosaurs?
Not the Mesozoic ones. They died out 65 million years ago. If birds are indeed small feathered dinosaurs, then we see and hear them every day.
Did dinosaurs make noises?
Dinosaurs probably vocalized in some way to announce territory or keep the heard together. Parasaurolophus has a prominent tube-like crest which looks like a sounding organ of deep bass tones.
What should a Paleontologist know?
In order to draw parallels between living and fossil organisms, paleontologists need extensive training in zoology, botany, and geology. They need a knowledge of fieldwork, which includes interpreting sediments, searching for fossils and then digging them up. This usually is done while camping in rough conditions in remote areas. They need to know how to prepare fossil specimens in the lab, to identify them and to care for a fossil collection in a museum or university. They need computer skills to analyze fossils. They need good writing skills in order to write reports and papers on their work.
Who discovered the first dinosaurs?
The Chinese dragon may actually be based on fossil bones of theropod dinosaurs, like Yangchuanosaurus, seen thousands of years ago in the rocks of places like the Sichuan Basin in China. Primitive bushmen in Africa knew about dinosaur tracks. In Europe, William Buckland of Oxford, England collected and named large fossil reptile bones Megalosaurus (Large Lizard) in 1824. That was followed the same year by discovery of Iguanodon teeth by Mary and Gideon Mantell of Sussex. In 1841, Sir Richard Owen named these large fossil reptilian animals “dinosaurs” (terrible lizards). In 1858 Joseph Leidy described the first American dinosaur, Hadrosaurus foulkii, a duck-billed dinosaur, from the Cretaceous marl pits of Haddonfield New Jersey. This dinosaur is displayed in the Academy of Natural Sciences, Philadelphia.
Were dinosaurs warm-blooded?
The answer is not simple or clear. Most living reptiles we know are cold-blooded; they depend on sun or warm air to heat them up and they retreat into shadow or water to cool off. The fast growth and active lifestyle of many bipedal dinosaurs favors warm-bloodedness. Birds are warm-blooded, so why not the dinosaurs that gave rise to them? The large sauropods were so massive that warming up and cooling off must have happened very slowly, furthermore, the large mass of fermenting plant material in their guts would tend to warm them so they may have not needed to be warm-blooded.