New Dinosaur Species Reveals Clues about Spinosaurus History

Scientists have recently uncovered a partial skeleton of a previously unknown dinosaur species in the town of Cinctorres, located in the Spanish province of Castellon. This remarkable find provides valuable insights into the history and behavior of a highly successful group of meat-eating dinosaurs that inhabited both land and water.

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Dinosaur Species

Scientists have recently uncovered the partial skeleton of a previously unknown dinosaur species in Cinctorres, Spain, providing valuable insights into the history of a highly successful group of carnivorous dinosaurs. The newly discovered dinosaur, named Protathlitis cinctorrensis, was a member of the spinosaurus, the largest known group of meat-eating dinosaurs. This finding contributes to our understanding of these creatures that thrived both on land and in water during the Cretaceous Period, approximately 126-127 million years ago.

Overview of Spinosaurus

The spinosaurus were a group of carnivorous dinosaurs that belonged to the larger classification of theropods, which encompassed all meat-eating dinosaurs, including famous species like Tyrannosaurus and Giganotosaurus. Spinosaurus were known for their impressive size and unique characteristics. The newly discovered dinosaur, Protathlitis cinctorrensis, measured approximately 10-11 meters in length and weighed around 2 tonnes. It possessed a bipedal stance, similar to other theropods, and shared common features with its spinosaurus relatives.

The newly discovered dinosaur, Protathlitis cinctorrensis, belongs to a group called spinosaurus. Spinosaurus were part of the larger assemblage of theropod dinosaurs, which included renowned carnivorous dinosaurs like the tyrannosaurus genus from North America and the giganotosaurus genus from South America, as well as carnivorous birds. Among the spinosaurus, Protathlitis cinctorrensis is one of the largest known carnivorous dinosaurs. It shares similarities with other spinosaurus, such as Baryonyx, which was discovered in England in the 1980s. These spinosaurus had elongated skulls and distinct characteristics that set them apart from other meat-eating dinosaurs.

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The Discovery of Protathlitis cinctorrensis

The discovery of Protathlitis cinctorrensis provides valuable insights into the evolutionary history and behavior of spinosaurus. As one of the largest carnivorous dinosaurs, spinosaurus played a crucial role in the ecosystem of the Cretaceous Period. While some spinosaurus were known to have adopted a semi-aquatic lifestyle, primarily hunting fish, Protathlitis cinctorrensis exhibited a different hunting strategy. It is believed that this dinosaur primarily hunted on land in coastal areas and only occasionally targeted fish.

The partial skeleton of Protathlitis cinctorrensis includes the right upper jawbone, one tooth, and five vertebrae. These remains provide paleontologists with valuable information about the physical characteristics and anatomy of this dinosaur. Protathlitis cinctorrensis is closely related to Baryonyx, a spinosaurus discovered in England. Both dinosaurs had elongated skulls, distinguishing them from many other meat-eating dinosaurs. However, unlike Baryonyx, no limb remains of Protathlitis were found.

Geological Context and Distribution

The discovery of Protathlitis cinctorrensis contributes to our understanding of spinosaurus evolution. By studying the partial skeleton and comparing it to other spinosaurus, scientists can gain insights into the evolutionary history and diversification of this group of dinosaurs.

The finding supports the idea that during the early Cretaceous Period, two lineages of spinosaurus—those closely related to Baryonyx and those closely related to Spinosaurus—occupied different regions. Baryonyx relatives dominated in Europe, while Spinosaurus relatives were more abundant in Africa. The migration patterns of spinosaurs and their spread across Europe, Africa, Asia, and South America are still being studied.

Related Discoveries and Fossil Finds

Fossils Excavated at Cinctorres: In addition to Protathlitis cinctorrensis, other dinosaur fossils were discovered in the Cinctorres area. These include a large, long-necked quadrupedal herbivore, two smaller bipedal herbivores, and another theropod species.

Related Spinosaurus: Baryonyx and Spinosaurus: Protathlitis cinctorrensis shares a close evolutionary relationship with the spinosaur Baryonyx, which was previously unearthed in England. Both dinosaurs possessed elongated skulls and were part of the same spinosaur lineage. Spinosaurus, the largest spinosaur, lived in Africa during the same time period.

Implications for Spinosaur Evolution

Lineages of Spinosaurus: The discovery of Protathlitis cinctorrensis supports the hypothesis that two lineages of spinosaurs existed during the early Cretaceous Period. The Baryonyx-related spinosaurs dominated in Europe, while the Spinosaurus-related spinosaurs were more abundant in Africa.

Migration and Diversification: These two spinosaur lineages likely occupied western Europe before migrating to Africa and Asia, where they underwent further diversification. This finding highlights the dynamic nature of spinosaur evolution and their ability to adapt to different environments.

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Comparison with Other Carnivorous Dinosaurs

Unique Features of Spinosaurs: Spinosaurs, including Protathlitis cinctorrensis, had distinct characteristics that set them apart from other carnivorous dinosaurs. Their elongated skulls, specialized teeth, and adaptations for both land and water hunting distinguish them as a unique group within the theropod lineage.

Coexistence with Other Carnivores: During the Cretaceous Period, spinosaurs coexisted with other large carnivorous dinosaurs like the tyrannosaurs and giganotosaurs. The presence of diverse carnivorous species suggests a complex ecosystem where different predators occupied different niches.

Paleoenvironment of the Cretaceous Period

Coastal and Marine Influence: The presence of spinosaurs like Protathlitis cinctorrensis in coastal regions indicates their close association with marine environments. The Tethys Sea provided abundant food resources, and spinosaurs likely took advantage of the rich coastal ecosystem.

Biodiversity and Climate: The Cretaceous Period was characterized by high biodiversity and a warm climate. The discovery of various plant-eating dinosaurs, crocodiles, sharks, and fish fossils alongside Protathlitis cinctorrensis further enhances our understanding of the diverse life forms that thrived during this time.

Contributions to Paleontological Research

Filling Gaps in the Fossil Record: The discovery of Protathlitis cinctorrensis contributes to the ongoing efforts to fill gaps in our understanding of dinosaur evolution. With each new discovery, scientists can piece together a more comprehensive picture of the ancient world and the organisms that inhabited it.

Implications for Conservation: Studying the history and diversity of dinosaurs can also have implications for modern conservation efforts. By understanding how ecosystems functioned in the past and how different species interacted, scientists can apply this knowledge to preserve and protect present-day biodiversity.


The recent discovery of Protathlitis cinctorrensis in Spain sheds light on the fascinating world of spinosaurs and their role in the Cretaceous ecosystem. This bipedal, carnivorous dinosaur provides valuable insights into the hunting strategies, adaptations, and evolutionary history of spinosaurs. The findings not only deepen our understanding of ancient ecosystems but also have implications for our appreciation and conservation of biodiversity today. As paleontologists continue to uncover new fossils and expand our knowledge, we gain a clearer picture of the magnificent creatures that once roamed our planet.

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