(named after the region it was discovered in).
Named By: R. Barsbold, H. Osmólska, M. Watabe, P. J. Currie & K. Tsogtbaatar - 2000.
Classification: Chordata, Reptilia, Dinosauria, Saurischia, Theropoda, Oviraptorosauria, Oviraptoridae.
Species: N. gobiensis (type).
Size: About 1.7 meters long.
Known locations: Mongolia - Nemegt Formation.
Time period: Maastrichtian of the Cretaceous.
Fossil representation: Partial post cranial remains including partial left leg, pelvic girdle and most of the spine.
are so named because of their similarity to birds, but Nomingia
genus that took things one step further. The end five caudal
(tail) vertebrae are fused together to form a pygostyle like that of
birds. In birds, the pygostyle serves as the attachment point for
the tail flight feathers, and in Nomingia the
pygostyle probably had
a similar function. However as an oviraptosaur, Nomingia
have been capable of flying, so the feather fan that attached to the
pygostyle of Nomingia most probably served as a
display device for
signalling to other members of the species. A possible scenario could
be a Nomingia bowing forward towards another and
then raising its tail
pygostyle high, the largest and best developed belonging to the
Other genera known to have had similar display devices to Nomingia include Caudipteryx and Similicaudipteryx, though others such as Epidexipteryx are also known to have had elaborate tail displays. Hailing from the Nemegt Formation, Nomingia, may have come into contact with other oviraptosaur genera such as Rinchenia and Avimimus. Other dinosaurs that Nomingia may have lived alongside include ornithomimosaurs such as Gallimimus, therizinosaurs such as Therizinosaurus, hadrosaurs like Saurolophus, ankylosaurs like Tarchia and sauropods like Nemegtosaurus. predatory threats could have included dromaeosaurs like Adasaurus and troodonts like Zanabazar, but it were the tyrannosaurs such as Alioramus and Tarbosaurus that would have been the apex predators of the Nemegt Formation.
- A new oviraptorosaur (Dinosauria, Theropoda) from Mongolia: the first dinosaur with a pygostyle - R. Barsbold, H. Osmólska, M. Watabe, P. J. Currie & K. Tsogtbaatar - 2000.