Diplodocus hallorum

†Diplodocus hallorum (formerly Seismosaurus) is a very large diplodocid sauropod from the Morrison Formation of New Mexico. Originally estimated at 50 m — among the longest animals ever — revised analyses suggest ~30–33 m. This herbivore's elongated body and whip-like tail are hallmarks of the diplodocid body plan found in Late Jurassic North America.

Diet & Feeding

Herbivore

Diplodocus hallorum 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 Late Mesozoic Era

Diplodocus hallorum lived during the Jurassic Late period of the Mesozoic Era, approximately 161,5 to 145,0 million years ago.

One of the most iconic periods for dinosaurs. Giant sauropods like Brachiosaurus and Diplodocus roamed alongside predators like Allosaurus. Archaeopteryx, the earliest known bird, appeared. The Morrison Formation preserves an extraordinary fossil record from this time.