Iguanodontidae

Comptonatus is an iguanodontid ornithopod dinosaur that lived about 125 million years ago, in the Early Cretaceous of what is now Europe. It was a medium sized herbivore at about 7 m in length, and weighed around 1 t in body mass. Fossilized footprints found near the original specimen indicate that Comptonatus was likely a herding animal. Comparisons between Comptonatus and other iguanodontids that lived around the same time and region show a high rate of diversity. This indicates there may have been pressure for speedy evolutionary adaptation in the region, or perhaps a high volume of migration.

Left femur of cf. Iguanodontidae gen. et sp. indet. (Ornithischia, Ornithopoda), IGP MZHLZ/2003/1, in posterior (A), lateral (B), medial (C), ante− rior (D), and distal (F) views, with transverse cross−section through the femoral shaft (E).

Magnoavipes sp. - dinosaur track from the Cretaceous of Colorado, USA. (replica; public display, Red Rocks Amphitheater visitor center, west of Denver, Colorado, USA) Dinosaur Ridge, Colorado has numerous dinosaur fossils, including bones and tracks. The most common track type at the site is Caririchnium leonardii, which was made by an iguanodontid dinosaur. A less common track is this - a slender, three-toed print called Magnoavipes, which was made by a theropod dinosaur. Stratigraphy: Dakota Sandstone, upper Lower Cretaceous Provenance: eastern side of Dinosaur Ridge, Dakota Hogback, west of Denver, north-central Colorado, USA

Caririchnium leonardii - dinosaur track from the Cretaceous of Colorado, USA. (replica; public display, Red Rocks Amphitheater visitor center, west of Denver, Colorado, USA) Dinosaur Ridge, Colorado has numerous dinosaur fossils, including bones and tracks. The most common track type at the site is Caririchnium leonardii, which was made by an iguanodontid dinosaur. The large, wide, three-toed print was produced by a hindfoot. Stratigraphy: Dakota Sandstone, upper Lower Cretaceous Provenance: eastern side of Dinosaur Ridge, Dakota Hogback, west of Denver, north-central Colorado, USA

Iguanodon de Bernissart (Iguanodon bernissartensis) présenté en position quadrupède, Institut Royal des Sciences naturelles de Belgique, Bruxelles

Iguanodon de Bernissart (Iguanodon bernissartensis) présenté en position quadrupède, Institut Royal des Sciences naturelles de Belgique, Bruxelles

Iguanodon de Bernissart (Iguanodon bernissartensis) présenté en position quadrupède, Institut Royal des Sciences naturelles de Belgique, Bruxelles

Iguanodon de Bernissart (Iguanodon bernissartensis) présenté en position quadrupède, Institut Royal des Sciences naturelles de Belgique, Bruxelles

Iguanodon de Bernissart (Iguanodon bernissartensis) présenté en position quadrupède, Institut Royal des Sciences naturelles de Belgique, Bruxelles