"Bayosaurus" is the informal name given to an as yet undescribed genus of dinosaur. The name was coined by paleontologists Rodolfo Coria, Philip J. Currie, and Paulina Carabajal in 2006. It apparently was an abelisauroid from the Turonian (Late Cretaceous) of Neuquén, Argentina, around 4 m (13 ft) long. The specimen is MCF-PVPH-237, including dorsal and sacral vertebrae, a fragmentary pelvis, and other fragments. The name was used in a phylogenetic analysis to indicate the position of MCF-PVPH-237.
- Coria, R.A; Currie, P.J.; Carabajal, A.P. (2006). "A new abelisauroid theropod from Northwestern Patagonia". Canadian Journal of Earth Sciences. 43: 1283–1289. doi:10.1139/e06-025.
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