It is a giant carnivorous dinosaur that lived in the late Cretaceous period, belonging to the theropod dinosaurs. Fossils were mainly found in Argentina and are one of the largest terrestrial carnivores discovered in South America. Huge in size, comparable to the famous Tyrannosaurus rex. The head is large, with strong jaws and sharp teeth, suitable for tearing prey. The forelimbs are relatively small, while the hind limbs are very developed, supporting its massive body. The tail is long and heavy, and may play an important role in balancing the body and making quick turns. Living in the late Cretaceous period approximately 97 to 93 million years ago, he was the top predator in the ecosystem at that time. They feed on other large dinosaurs.

It is a small theropod dinosaur known for its unique jaw and slender hind limbs. The mandible does not have an external mandibular window, and the neural spines of the posterior dorsal vertebrae are fan-shaped and have hook shaped protrusions for attaching ligaments. The first metacarpal bone is short and thick, the cervical spine is retroverted, and the femur lacks the fourth trochanter. Phylogenetic analysis shows that Megalosaurus belongs to the Coelurosauria class, which is a type of theropod dinosaur. In addition, stomach fossils of Megalosaurus suggest that it may have fed on small lizards. The estimated running speed is about 17.8 meters per second. Although the relationship between Megalosaurus and birds is relatively distant, its research provides important insights into the theory that birds originated from theropod dinosaurs

Stegosaurus is a giant theropod dinosaur belonging to the theropod suborder, which lived in southern Mongolia during the late Cretaceous period, about 70 million years ago. It belongs to the Stegosauridae family in the ornithopod suborder and is one of the largest ornithopod dinosaurs and theropod dinosaurs. It is 12 meters long and weighs 9.3 tons, with arms 2.5 meters long and claws 25 centimeters long. It is a giant omnivorous dinosaur and the largest theropod dinosaur discovered in Asia.

There is only one species in the genus Kunka, the hunchbacked Kunka. The fossil of the Kunca hunting dragon was discovered in the Laggonian Formation of Spain, dating back to the Barremian period of the Early Cretaceous. Kunka Hunting Dragon is a small shark toothed dinosaur with a body length of only about 5 meters. Compared with other shark toothed dinosaurs, the most prominent feature of the Kunkarasaurus is the towering neural spines on the two dorsal vertebrae adjacent to the sacrum. Paleontologists speculate that the two dorsal vertebral nerve spines of Kunkalisaurus may have developed muscles attached to them, forming a structure resembling a fleshy mound, which is likely to have display functions..