Supersaurus vivianae was a massive sauropod dinosaur from the Late Jurassic period, known for its extraordinary length, potentially reaching up to 110 feet (33.5 meters). It had a long neck and tail, and its herbivorous diet consisted mainly of coniferous trees. This dinosaur roamed semi-arid regions with seasonal rainfall.

Supersaurus vivianae is believed to have lived in what is now North America, specifically in the western United States. Fossils have been primarily found in the Morrison Formation, which spans across several states including Colorado, Wyoming, Utah, and New Mexico.

During the Late Jurassic period, approximately 150 million years ago, the environment in the Morrison Formation was semi-arid with distinct wet and dry seasons. The region consisted of vast floodplains, river systems, and fern prairies, with a warm climate that supported a diverse array of plant and animal life.

Supersaurus vivianae was a large herbivorous dinosaur, part of the sauropod group, which likely fed on a variety of vegetation such as ferns, conifers, and other gymnosperms. Its size suggests it occupied a niche as a high-browsing herbivore, capable of reaching vegetation in tall trees that other herbivores could not access.