Spinosaurus is a new species of dinosaur with a very large size and has been identified in the region of Spain. A team of paleontology experts from the Basque Country University, led by Erik Isasmendi, along with their colleagues, discovered this new species named Riojavenatrix lacustris. Spinosaurus belongs to the family of large theropod dinosaurs that have existed and been known since the mid-Cretaceous period.

As a member of the Theropoda dinosaur family, Spinosaurus is characterized by a long skull, cone-shaped teeth that are fused with the crocodile-like skull, and a powerful body with large thumb claws. Scientifically, they are known as Riojavenatrix lacustris, a species that can reach a length of 7-8 meters, equivalent to 23-26 feet, and weigh up to 1.5 tons.

Spinosaurus is considered as a type of fish-eating dinosaur (piscivore) due to its sharp teeth and skull and jaw characteristics that support this habit. Fossils of Spinosaurus have been found in various regions around the world, including Africa, Europe, South America, and Asia. Recently, a new species of Spinosaurus has been identified as a creature that lived in an area now known as Spain.

According to paleontologists, along with Riojavenatrix lacustris, there are already five Spinosaurus successfully described from the Lower Cretaceous of the Iberian Peninsula. Other Iberian Spinosaurus include Camarillasaurus from Aragon, Vallibon Avenatrix, Protathlitis from Valencia, and also Iberospinus from Portugal. The fossil remains found confirm that the Iberian Peninsula was home to a large and diverse carnivorous dinosaur population.