Ammosaurus

†Ammosaurus was a small sauropodomorph from the Early Jurassic (~185 Ma) of Connecticut and Arizona, USA. About 4m long, this bipedal/quadrupedal herbivore lived in what is now the American Southwest during the early days of dinosaur diversification. Named by Marsh in 1889 from material found in a Portland brownstone quarry, some researchers consider it synonymous with †Anchisaurus.

Diet & Feeding

Herbivore

Ammosaurus was a plant-eating dinosaur. Herbivores typically fed on ferns, cycads, conifers, and other vegetation available during their era. Many herbivorous dinosaurs developed specialized teeth and digestive systems for processing tough plant material.

Time Period

Jurassic Early Mesozoic Era

Ammosaurus lived during the Jurassic Early period of the Mesozoic Era, approximately 201.4 to 174.7 million years ago.

After the Triassic-Jurassic extinction, dinosaurs rapidly diversified and became the dominant land vertebrates. Early sauropods and theropods began to evolve larger body sizes.