pachycephalosaurus

/ păk′ĭ-sĕf′ə-lə-sôr′əs /

1. A large herbivorous dinosaur of the genus Pachycephalosaurus of the late Cretaceous Period. It grew to about 7.6 m (25 ft) long and had a domed skull up to 25.4 cm (10 inches) thick that was lined with small bumps and spikes. The thick skull may have been used for head-butting during mating displays.

Example Sentences

Their ranks included some of the most famous and beloved dinosaurs – Tyrannosaurus, triceratops, ankylosaurus, pachycephalosaurus, and more.

From The Guardian