If you are curious to find out more about different types of dinosaurs that inhabited our planet long time ago, keep reading. Dinosaurs were probably the most terrifying of all the animals on Earth. The word Dinosaur is comes from the Greek words “Denios” which means powerful and “sauros” which means lizard. Dinosaurs were the ruling our planet from the late Triassic period to the late Cretaceous period and they were the dominant species, which lasted for almost 160 million years. The term “Dinosaur” was first used in 1842 by Sir Richard Owen.
Different Types of Dinosaurs
Dinosaurs are divided into 2 groups – Sauischian or lizard-hipped dinosaurs and Ornithischian or bird-hipped dinosaurs. Classification can be made depending on their characteristics such as carnivorous (meat-eating dinosaurs), herbivorous (plant-eating), and omnivorous (both plant and meat-eating) dinosaurs. Following are some of the main types of dinosaurs.
Allosaurus was a huge dinosaur that lived during the late Jurassic to early Cretaceous period, in North America, about 135 to 154 million years ago. The name Allosaurus was derived from the Greek words, ‘allos’ meaning strange and ‘saurus’ meaning large dinosaur. They were between 30 and 39 feet long, with large head, short neck and sharp teeth. They used to feed on herbivorous dinosaurs as well as the carnivorous dinosaurs or other predators
Acrocanthosaurus is also known as Carnivorous Bipedal. It inhabited North America during the mid-Cretaceous period. This type of dinosaur was about 40 feet long and weighed around 2.4 tons.
These dinosaurs lived during the late Cretaceous period in North America. They used to feed on meat and most of these were 26 feet long and weighed 3 tons. The fossil was first found near Red Deep River in Alberta, Canada in 1884.
Gigantosauros was about 43 feet long and weighed 6.2 tons maximum. They inhabited Argentina during the late Cretaceous period.
Another significant type of Dinosaur was Achelousaurus, which was considered the transitional form of dinosaur between ceratopsians (those with horns) and the hornless dinosaurs. They were not as large as many other types. They were 20 feet long and 6 tons of weight. The significant features of this type of dinosaur were parrot-like beak and long neck frill with horns.
Tyrannosaurus Rex was a carnivorous species. They lived in North America and Asia some 90 million years ago. Body length of Tyrannosaurus Rex was 39 feet but the largest one ever found was 42 feet long. Their height was 20 feet and 7 tons was the average weight. They were considered scavengers because they were not good runners.
Spinosaurus (also known as spine lizards) lived on Earth some 110 to 98 million years ago.
Apart from these significant types, many different types of dinosaurs also lived on Earth such as Alamosauros, Apatosaurus, Brachiosaurus and Diplodocus. Dinosaurs became extinct 65 million years ago.