trituberculatus

**Trituberculatus**

Trituberculatus is a genus of small, extinct marine reptiles that lived during the Late Triassic period, approximately 228 to 225 million years ago. These animals are notable for their unique skeletal structure, particularly their shoulder girdle, which features three prominent tubercles (bumps) on the scapula—a feature that distinguishes them from other early reptiles. The name *Trituberculatus* translates to "three-tubercled," reflecting this distinctive anatomical trait.

Trituberculatus was a marine reptile, likely inhabiting shallow coastal waters. Fossil evidence suggests it was a small, agile predator, possibly feeding on fish or other small marine organisms. Its skull was relatively simple, lacking the complex adaptations seen in later marine reptiles like ichthyosaurs or plesiosaurs. The genus is known from a few well-preserved specimens, primarily from the Norian stage of the Triassic, particularly in regions such as North America and Europe.

The exact evolutionary significance of the tritubercle structure remains a subject of study. Some researchers speculate it may have played a role in muscle attachment or sensory function, though its precise function is not yet fully understood. Trituberculatus represents an early stage in the diversification of marine reptiles, bridging the gap between terrestrial and fully aquatic forms. Its fossils provide valuable insights into the ecological and evolutionary transitions of this critical period in vertebrate history.