English: Talenkauen is a basal iguanodont from the Late Cretaceous of Argentina. It was a small bipedal herbivore with teeth in the tip of its beak, unlike more derived iguanodontians. It grew to around 4.5 m in body length, and weighed about 300 kg. Talenkauen had a proportionally long neck, and a small head for which it is named. Shared features with other South American ornithopods suggest that there was a distinct Southern Hemisphere ornithopod group. Talenkauen specimens include the first hatchling ornithopod discovered in the Southern Hemisphere.