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A. jimmadseni skull with diagram highlighting individual bones. The skull and teeth of Allosaurus were modestly proportioned for a theropod of its size. Paleontologist Gregory S. Paul gives a length of 845 mm (33.3 in) for a skull belonging to an individual he estimates at 7.9 m (26 ft) long. [31]
Diagram showing the known skull remains of the holotype (left) and the assigned specimen. Though incompletely known, the skull of Giganotosaurus appears to have been low. The maxilla of the upper jaw had a 92 cm (36 in) long tooth row, was deep from top to bottom, and its upper and lower edges were almost parallel.
An Allosaurus pubic foot shows marks by the teeth of another theropod, probably Ceratosaurus or Torvosaurus. The location of the bone in the body (along the bottom margin of the torso and partially shielded by the legs) and the fact that it was among the most massive in the skeleton indicates that the Allosaurus was being scavenged. [52]
Saurophaganax is the official state fossil of Oklahoma, [8] and a large skeleton of Saurophaganax can be seen in the Jurassic hall in the Sam Noble Oklahoma Museum of Natural History. Although the best known Saurophaganax material was found in the panhandle of Oklahoma, possible Saurophaganax material, NMMNH P-26083, a partial skeleton ...
The three may also have had different dietary preferences, with Allosaurus being more suited for bone slicing (thanks to its short and stout serrated teeth, deep and narrow skull, and powerful dorsoventral movement capacity of the neck), while Ceratosaurus, with its long and blade-like teeth and relatively straight neck, would have probably ...
acetabulum. In dinosaurs, the acetabulum (plural: acetabula) or hip socket is an opening in the pelvis formed by the ilium, pubis, and ischium that is visible in lateral and medial views. It accommodates the head of the femur, forming the hip joint. Most tetrapods show a closed acetabulum, in which the socket is completely filled with bone ...
Bonaparte, 1985. Carnotaurus (/ ˌkɑːrnoʊˈtɔːrəs /; lit. 'meat bull') is a genus of theropod dinosaur that lived in South America during the Late Cretaceous period, probably sometime between 72 and 69 million years ago. The only species is Carnotaurus sastrei. Known from a single well-preserved skeleton, it is one of the best-understood ...
Allosauridae is an extinct family of medium to large bipedal, carnivorous allosauroid theropod dinosaurs from the Late Jurassic. [2] Allosauridae is a fairly old taxonomic group, having been first named by the American paleontologist Othniel Charles Marsh in 1878. [3] Allosaurids are characterized by an astragalus with a restriction of the ...