Thescelosaurus garbanii

† Thescelosaurus garbanii is a Late Cretaceous thescelosaurid from Hell Creek Formation of Montana, the specimen formerly known as 'Willo'. Preserved in exceptional completeness, this individual contributed to controversial debates about dinosaur soft tissue preservation.

Diet & Feeding

Herbivore

Thescelosaurus garbanii 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

Cretaceous Late Mesozoic Era

Thescelosaurus garbanii lived during the Cretaceous Late period of the Mesozoic Era, approximately 100.5 to 66.0 million years ago.

The final age of dinosaurs, featuring iconic species like Tyrannosaurus rex, Triceratops, and Velociraptor. Dinosaurs reached their peak diversity before the catastrophic asteroid impact at the Chicxulub crater ended the Mesozoic Era.