A dinosaur is any species that belonged to or evolved into an early form of the group Dinosaurian. They varied greatly in size during their time on earth and were typically land-dwellers until their extinction at the end of the Cretaceous period.
Categories of Dinosaur
To create an accurate model of what dinosaurs looked like, scientists combine the research from many fields such as biology, genetics, and anatomy.
The three main categories:
- Discovering and studying dinosaur fossils.
- Using computer software to create an image of a typical dinosaur representing the average characteristics of all the individual fossils found. This rebuilding is called “reconstructing” a dinosaur.
- Taking this reconstructed model and comparing it with living animals to determine if the reconstruction is anatomically possible or not. If there are any problems with parts such as the hips or feet, these parts of the rebuilding will have to be modified until they fit correctly with other skeleton parts.
Different Features of Dinosaur Body
The body structure of dinosaurs has been the focus of much research and speculation. All dinosaur species were warm-blooded creatures with high metabolisms. Many carnivorous dinosaurs had giant heads, sharp teeth, and powerful jaws.
Size: Dinosaurs ranged from a few centimeters to around 100 feet long. Most were relatively small compared to humans, with the average height of a grown adult being about 6.5 feet tall. Their weight depends on their size and species, but even small dinosaurs weighed around 200 pounds.
Spines: Dinosaurs had upright spines with massive chests and tails to support the weight of the head and body.
Brain: Some herbivores had larger brains than carnivores because they required more intelligence to avoid predators in their environment. Smaller dinosaurs often had smaller brains, which meant less intelligence to help them survive in a dangerous world full of predators.
Senses: Dinosaur eyesight ranged from poor to highly develop depending on the species. Their vivid color vision-enabled many species to find food easily without competing with other animals for it.
Sound Production: Many extinct dinosaurs probably communicated using chirps, hums, or roars, as many birds do today.
Ears: No dinosaur had external ears, but most did have ear openings on the side of their heads surrounded by a bony ring. Some had high-fidelity directional hearing, while others could hear only low-frequency sounds.
Skin: Dinosaur skin was thick and leathery, but some species also developed scales or bony plates as protection. All had a layer of insulating fat beneath the skin that may have been four to twelve inches thick.
They had a toothless beak and sheared teeth for cropping vegetation. They are dinosaurs with 500 teeth. Initially, six Nigersaurus species were assigned to the genus, but “Nigersaurus taqueti” was later reclassified into its own genus Lurdusaurus. Only three species are currently considered valid. They were quadruped herbivores around 2 meters long, with a short tail and a tiny head.
The suborder “Sauropoda” comprises quadrupedal, herbivorous dinosaurs renowned for their long necks and tails. With at least 150 genera and 600 species, Sauropods were the most diverse group of saurischian dinosaurs. All Sauropods have very long necks and tails to help them reach up into trees to get more sunlight, to help them eat flowers and fruits high up on the tree. Even young Sauropods have long necks, but they get longer as sauropods grow older.
Titanosauria is a group within the infra order of sauropods, named by Othniel Charles Marsh in 1877. It contains some of the largest land animals known to science, including genera Argentinosaurus, Paralititan, Alamosaurus, Patagotitan, Futalognkosaurus, Puertasaurus, Antetonitrus, Rapetosaurus, and Dreadnoughtus.
Name the different species of dinosaurs?
Some of the species of dinosaurs are “Albertosaurus,” “Allosaurus,” “Baryonyx,” “Carnotaurus,” “Coelophysis” and Nigersaurus species.
Which is the giant dinosaur in the world?
Dreadnoughtus is the world’s most giant dinosaur, and its length is 85 feet and weight is about 65 tons.