Definitions

1. noun

A large herbivorous ornithopod dinosaur that lived during the Early Cretaceous period, characterized by its distinctive thumb spike.

“The museum exhibit featured a life-sized model of the iguanodon, showcasing its unique thumb spike.”

2. noun

A genus of dinosaurs, also known as the type genus of the Iguanodontia clade.

“The discovery of a new iguanodon fossil helped scientists better understand the evolution of these ancient creatures.”