Ojoraptorsaurus
Ojoraptorsaurus is a genus of oviraptorosaurian dinosaur from the late Cretaceous. "Ojoraptorsaurus" is only known from pubic bones found at the Naashoibito Member of the Ojo Alamo Formation dating to the early Maastrichtian, about 69 million years ago. It was first named by Robert M. Sullivan, Steven E. Jasinski and Mark P.A. van Tomme in 2011 and the type species is "Ojoraptorsaurus boerei". The generic name combines a reference to the formation with a Latin "raptor", "plunderer", and a Latinised Greek "saurus", "lizard". The specific name honours oceanographer Arjan Boeré who found the specimen. Description. The holotype of "Ojoraptorsaurus  is SMP VP-1458, an incomplete pair of fused pubes. Due to the fusion of the pubes, this specimen is believed to have been a mature individual. Most caenagnathid species are known from very few remains, and Ojoraptorsaurus" is no exception. The holotype was compared to well-described pubic remains of other oviraptorosaurians, namely "Microvenator", "Epichirostenotes", "Nomingia", and CM 78001 (now known as "Anzu"). It shares with the latter three taxa an enclosed fossa on the inside edge of the pubis near the acetabular rim, a trait which may be diagnostic to caenagnathids (in which case "Nomingia" is a caenagnathid). "Ojoraptorsaurus 's" fossa is further away from the acetabular rim than those of the other species, a feature characteristic to the genus. Among compared oviraptorosaurians, "Ojoraptorsaurus" is most similar to "Epichirostenotes", a genus differentiated from "Chirostenotes" in the same paper that "Ojoraptorsarus" was described in. By comparing pubic proportions with those of CM 78001 ("Anzu"), "Ojoraptorsaurus" has been estimated to have been about 1.8 to 2.1 meters (5.9 to 6.9 feet) in length, about 20% smaller than "Epichirostenotes". "Ojoraptorsaurus" differs from other caenagnathids due to possessing the following autapomorphies: