Ceratosaurus nasicornus, a Jurassic-era theropod dinosaur, is distinguished by its prominent nasal horn and elongated body. It thrived in riverine environments, displaying both terrestrial and aquatic hunting skills. Notably, it featured a row of bony bumps along its back, aiding in species recognition and mating displays.

Ceratosaurus nasicornus, a theropod dinosaur, lived during the Late Jurassic period approximately 150 million years ago. Fossils have been primarily found in the Morrison Formation, which spans parts of what is now the western United States, including Colorado, Utah, and Wyoming.

During the Late Jurassic, the area that is now the Morrison Formation was characterized by a semi-arid climate with distinct wet and dry seasons. The environment consisted of floodplains, river channels, and fern savannas, providing a diverse range of habitats.

Ceratosaurus nasicornus was a carnivorous dinosaur that likely occupied a niche as a predator or scavenger. Its habitat allowed it to coexist with other large theropods by possibly focusing on different prey or utilizing different hunting strategies. Its robust teeth and facial horns suggest adaptations for a potentially varied diet and intraspecific competition.