Murusraptor ("wall thief") is a genus of carnivorous megaraptoran theropod dinosaur from the Sierra Barrosa Formation, part of the Neuquén Group of Patagonia, in Argentina, South America.

[1] In 2001, Sergio Saldivia, preparator at the Museo Carmen Funes, thirty kilometres northeast of Plaza Huincul in a canyon wall discovered the skeleton of a theropod dinosaur new to science.

The skeletal elements recovered for this type specimen of Murusraptor include a partial skull consisting of a complete braincase with frontals and parietals, right lacrimal, prefrontal, postorbital, quadrate, pterygoid, epipterygoid and ectopterygoid, thirty-one teeth, the rear elements of the right lower jaw, twelve vertebrae from the back, sacrum and tail, eleven thoracic ribs, a single haemal arch or chevron bone, several gastralia, a third manual ungual, complete left ilium, part of a right ilium, proximal ends of both pubic bones, distal ends of the ischia, the right tibia, and a calcaneum.

[1] The holotype of Murusraptor is estimated to be 6.4 m (21 ft), but is considered to be an immature specimen, as the cranial sutures in its braincase have not yet disappeared; this indicates it would have been potentially larger.

In the braincase, the processus basipterygoidei are situated at the front underside of the basisphenoid while the entrance of the deep depression of the recessus basisphenoideus is directed obliquely upwards and to the rear.

[1] The cladogram follows Coria & Currie (2016), who added Murusraptor to the study and utilized the family Megaraptoridae, which was originally named by Novas et al.

[4][5] Allosauridae Fukuiraptor Megaraptor Aerosteon Orkoraptor The type specimen of Murusraptor shows signs of severe infections around the left side of its braincase.