[D] Gorgosaurus novojilovi [Su]
Cretaceous Late Campanian ?Maastrichtian
Saurischia Theropoda Tyrannosauria Tyrannosauridae Tyrannosaurinae Tarbosaurini
Tsagan-Ula Nemegt Formation, Omnogov, Mongolia
Maleevosaurus novojilovi (Pickering, 1984, [Carpenter, 1992]) >> Gorgosaurs novojilovi (Maleev, 1955)
Maleevosaurus (Pickering) was diagnosed, with type specimen designated, in 1984, for Maleev\\\\\\\'s Gorgosaurus novojilovi in 1984, and has priority over Carpenter\\\\\\\'s 1992 nomen clature.
See also Albertosaurus novojilovi (Maleev, 1955 vide Mader & Bradley, 1989)
Skull with associated poscrania.
From: Maleev, E. A. (1955). [New carnivorous dinosaurs from the Upper Cretaceous of Mongolia]. Doklady Akad. Nauk S.S.S.R. 104: 779-783. (In Russian)
Translated by F. J. Alcock
Gorgosaurus novojilovi sp. nov.
Type of species
Skull and postcranial skeleton. Collection of the Paleontological Institute, Academy of Sciences USSR, #552-2.
Carnivorous dinosaur of medium size, attaining 5 to 6 m in length and 2.5 to 3 m in height. Skull proportionally small, maxilla less massive and snout narrower than in Gorgosaurus libratus and Gorgosaurus lancinator. Orbits large and round.
First antorbital fenestra occupies almost _ the length of skull. Lower jaw low, elongate. Premaxilla bears 4 teeth, maxilla 12, dentary 15 teeth. Teeth tiny, strongly compressed laterally and serrated marginally, oval-elongate transversely. Interdental plates in shape of triangular plates.
Neck somewhat longer than in the case of Tyrannosaurus and Tarbosaurus . Cervical vertebrae amphicoelous or slightly opisthocoelous; the articular surface of centra slanted. Dorsal vertebrae amphicoelous, centra tall and strongly compressed laterally. Scapula elongated. narrow; coracoid broad, short; humerus narrow, short.
The proportion of the length of humerus to the length of scapula 2:1. Pelvic girdle massive, surpasses the dimensions of the skull. Ilium tall, long. Pubis massive; symphysis strongly elongated and forms a powerful bony expansion suggesting a pressing iron in shape. Ischium short, broad.
Femur massive, considerably shorter than the foot. Dimensions of femur and tibia 0.9:1. Metatarsals long, well-proportioned, the proportional dimensions of Mt3 to length of femur 0.75:1. Pes strong. Tail long and consists of 40 to 45 vertebrae.
Gorgosaurus novojilovi sp. nov. is similar to Gorgosaurus sternberg (Matthew & Brown, 1923), although considerably smaller in size and more proportioned. The Mongolian form differs from Gorgosaurus lancensis (Gilmore, 1946) by the large skull and narrower snout.
Tsagan-Ula, 30 to 70 km WSW of the south site of the Nemegt Basin. Numerous fragments also discovered at Nemegt.
Skull and postcranial skeleton. Bone is white and well preserved. The discovery of deinodonts in Mongolia indicates clearly the great diversity in the fauna of dinosaurs in Central Asia. The fauna included sauropods, trachodonts, ankylosaurs, and many carnosaurs, just as diverse as in the New World.
Source: Polyglot Paleontologist