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Chinlesaurus, new plant-eating theropod from Upper Jurassic of Chile
A new online paper:
Fernando E. Novas, Leonardo Salgado, Manuel Suárez, Federico L.
Agnolín, Martín D. Ezcurra, Nicolás R. Chimento, Rita de la Cruz,
Marcelo P. Isasi, Alexander O. Vargas & David Rubilar-Rogers (2015)
An enigmatic plant-eating theropod from the Late Jurassic period of Chile.
Nature (advance online publication)
Theropod dinosaurs were the dominant predators in most Mesozoic era
terrestrial ecosystems. Early theropod evolution is currently
interpreted as the diversification of various carnivorous and
cursorial taxa, whereas the acquisition of herbivorism, together with
the secondary loss of cursorial adaptations, occurred much later among
advanced coelurosaurian theropods. A new, bizarre herbivorous basal
tetanuran from the Upper Jurassic of Chile challenges this conception.
The new dinosaur was discovered at Aysén, a fossil locality in the
Upper Jurassic Toqui Formation of southern Chile (General Carrera
Lake). The site yielded abundant and exquisitely preserved
three-dimensional skeletons of small archosaurs. Several articulated
individuals of Chilesaurus at different ontogenetic stages have been
collected, as well as less abundant basal crocodyliforms, and
fragmentary remains of sauropod dinosaurs (diplodocids and