Williston, Samuel Wendell 1901.
Although notable as the first free-standing mount of a theropod dinosaur, and often illustrated and photographed, it has never been scientifically described.
Many of the dinosaurs of the Morrison Formation are the same genera as those seen in Portuguese rocks mainly Allosaurus, Ceratosaurus, Torvosaurus, and Stegosaurus , or have a close counterpart Brachiosaurus and , Camptosaurus and.
fragilis is the type species and was named by Marsh in 1877.
" Camarasaurus, Amphicoelias, and other sauropods of Cope".
" ThoughtCo, Feb.
Journal of Morphology.
Another possibility is that it preferred to hunt juveniles instead of fully grown adults.
"Prey attack by a large theropod dinosaur".
This proposal has not attracted further attention, however.
In 1914, paleontologist C.
In any case, Allosaurus was a massive carnivore.
In his 1988 book, Predatory Dinosaurs of the World, the freelance dinosaurologist Gregory Paul proposed that A.
Aside from A.
fragilis had tall pointed horns and a slender build compared to a postulated second species A.
Allosaurus itself is 1930, a small collection of fragmentary bones including parts of three vertebrae, a rib fragment, a tooth, a toe bone, and, most useful for later discussions, the shaft of the right humerus upper arm.
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