Spinosaurus was a large theropod carnivorous dinosaur that lived in the middle of the Cretaceous period, mainly in the estuarine delta region of northern Africa. It is one of the longest known carnivorous dinosaurs. The most prominent feature is the long spines on its back, which are extended by the nerve spines of the vertebrae to form a structure similar to a ship's sail. May be used to regulate body temperature, store fat, attract the opposite sex, or threaten an opponent. Is a semi-aquatic animal with body structures adapted to aquatic life, such as long, narrow upper and lower jaws and sharp teeth, suitable for catching fish and other small animals. The hydrophilicity increases in the high temperature season.

Megalosaurus, also known as Southern Megalosaurus, is a large carnivorous dinosaur that lived in the middle of the Cretaceous period, belonging to the theropod suborder sharkodosauridae. It was one of the largest terrestrial carnivorous dinosaurs of its time, smaller only than Spinosaurus and Tyrannosaurus. Large size, huge head, narrow mouth, sharp teeth, up to 20cm long, suitable for biting and hunting. The forelimbs are short, the hind limbs are stout, and they walk on two feet. Fossils were first discovered in Argentina in 1993, mainly in the Patagonia region of Argentina. The top predators in the ecosystem at the time were known for their strong predation and large size.

It is a large theropod carnivorous dinosaur that lived in northern Africa during the mid Cretaceous period, famous for its unique sail like dorsal spine and body shape adapted to aquatic life. It is one of the largest known carnivorous dinosaurs. The head is long and narrow, similar to modern crocodiles, with straight conical teeth that lack serrated edges and are suitable for hunting fish. The dorsal nerve spines are very tall, forming unique sail like structures that may be used to regulate body temperature, attract the opposite sex, threaten opponents, or attract prey. The living environment includes wetlands such as rivers, lakes, and swamps, and is active on land and near water, preying on fish and other aquatic animals.

Argentinosaurus belongs to the Titanosaur class of sauropod dinosaurs, and its name is very simple, meaning a dinosaur discovered in Argentina. Survival period: 100 million years ago, mid Cretaceous Albian stage -93 million years ago, late Cretaceous Senonian stage. It is one of the largest land dinosaurs discovered. It is one of the largest animals that once roamed the earth, with a height of 12 meters and a length of 42 meters. Among all modern organisms, only the fragile double chambered dinosaur is longer than it. There are some other dinosaurs that are as long as the Argentinosaurus, and some that are taller than it. However, Argentinosaurus is still much heavier than other dinosaurs, possibly weighing up to 94 tons.