Allosaurus
Name meaning: Different Lizard
Time Period: Kimmeridgian to Tithonian (Late Jurassic)
Locations: Oklahoma Morrison formation
Taxonomy: Theropoda, Allosauridae
Subspecies: A. fragilis A. jimmadsen A. europaeus Contreversal: A. amplexus A. atrox A. maximus and A. tendagurensis
Characteristics ~ ~ ~ ~
Allosaurus had 20-degree vision, meaning its vision overlapped in a small area so if prey left that field, Allosaurus would struggle to track with depth perception. Its small horn-like structure was probably used to attract mates, identify individuals, and keep the sun out of its eyes. Allosaurus had a relatively basic brain structure similar to that of a crocodile. It had a large olfactory bulb but a small piriform cortex, meaning it had a strong sense of smell, but had trouble recognizing and processing advanced smells. Its ears were adapted for low-frequency noises, which indicates they communicated with such noises as grumbles. They had well-developed, long arms with 3 digits often having tendon avulsions, indicating Allosaurus likely used its prey in combat upon struggling prey or other Carnivores, resulting in injury. Allosaurus scavenged at possibly hunted weak, sickly, or juvenile sauropods such as Diplodocus, Pleurocoelus, Apatosaurus, and Camarasaurus. Allosaurus and Stegosaurus likely fought frequently throughout their lives, with Stegosaurus found to have Allosaurus bite marks on their plates. In contrast, an Allosaurus was found with a hole in its pelvis from a Stegosaurus' thagomizer. Other smaller dinosaurs like Camptosaurus and Dryosaurus may have tried to outrun and outmaneuver Allosaurus. Ceratosaurus was another large theropod coexisting with Allosaurus, though it was smaller the two are determined to have a fierce rivalry, with locations only consisting of one species of fossils as they held territory from the other. Some closely related species are Yangchuanosaurus Sinraptor and the controversial Saurophaganax.History ~ ~ ~ ~
Countless fossils have been found for Allosaurus more than any other Jurassic dinosaur. Allosaurus was discovered back in 187. Big Al is one of the most famous fossils ever recovered, being a 95% complete skeleton of an adolescent male found in 1991 and having damaged ribs from combat with another Allosaurus. And a blistering toe infection that seems to have caused his lethal demise. Big Al was so good that he had a sequel five years later where paleontologists would find another Allosaurus they would name Big Al 2. Thought to be A. jimmadseni Big Al mk2 has hardly any information
Media Deptictions
Ballad of Big Al Came out on December 25th 2000 after the walking with dinosaurs series concluded. Ballad of Big Al goes over the presumed life story of Big Al from the time of his birth to his premature death. It showcases much of the Harsh conditions of the Jurassic and interprets reasons for Big Al's injurys, such as an attack from a larger female Allosaurus when attempting to mate for his Rib fractures. And tripping over a tree log while hunting Dryosaurus to explian his foot infection. Allosaurus in walking with Dinosaurs has unatural posture, and it looks horribly shrink wrapped like it is about to die from starvation.
Jurassic World Allosaurus has had two main film designs, one for Jurassic World Fallen Kingdom where it is based upon A.jimmadsen and only has a backround role most noteable for getting hit by volcanno debris. For the short film Battle at Big Rock a new monsterous Allosaurus was made, that is drastically larger resembling Saurophaganax with crocodile scutes and spikes along the back of the body. Theres no inuniverse reason why this Allosaurus looks different, but I presume Fallen Kingdom's Allosaurus is a female while Big Rock's Allosaurus is a male.
Dinosaur Revolution
Planet Dinosaur I've seen the clip of the Allosaurus chasing a Dryosaurus in way too many youtube videos for some reason. It uses the outdated hatchet bite for Allosaurus where it would slam down it's upper jar on it's prey. And it's pattern pattern is cool and makes sense when looking at all the red ant hills in the backround
