Thalattosuchus

Thalattosuchus was an extinct genus of marine crocodyliforms belonging to the family Thalattosuchidae. These prehistoric marine reptiles lived during the Late Jurassic period, approximately 160 to 150 million years ago. Fossils of Thalattosuchus have been found primarily in Europe, notably in England, indicating their presence in epicontinental seas that covered parts of the region during their time.

Thalattosuchus was characterized by adaptations suited for aquatic life, including a elongated, streamlined skull, conical teeth for catching fish and other small marine animals, and a body optimized for swimming. It exhibited a semi-aquatic lifestyle, with limbs adapted into flippers to aid in propulsion through water, while still retaining some ability for terrestrial movements, although primarily aquatic.

Taxonomically, Thalattosuchus is classified within Crocodylomorpha, close to the modern crocodiles, but with significant differences reflecting its specialized marine adaptations. Its skull and dental morphology suggest a pelagic or near-shore predatory niche.

Research indicates Thalattosuchus played an important role in marine ecosystems of the Late Jurassic, acting as a top predator. The genus contributes valuable insights into the evolution of marine crocodyliforms and the diversity of prehistoric marine reptiles.

Despite its significance, the genus is known from relatively limited fossil remains, and ongoing studies aim to clarify its full anatomical features, evolutionary relationships, and ecological role within Jurassic marine environments.