The master predator was Allosaurus fragilis, "the wolf of the Jurassic." They probably hunted in packs to bring down the huge sauropods. Tyrannosaurs hadn't come on the scene yet.
Of course, "dangerous" could be "dangerous to whom?" Animals smaller than the sauropods (who could probably stand off some Allosaurus attacks) were threatened by many smaller predators that would never think of taking on the giants.
Also, creatures such as stegosaurs could be pretty dangerous to anything getting within reach of that spiked tail.
The Jurassic Period
Jurassic period
The biggest dinosaur in the Jurassic period were the gigantic sauropods like the famous Diplodocus.
A Dinosaur :D
Ultrasauros dinosaur fossils date from the late Jurassic period. Utahraptor dinosaur lived during the early Cretaceous period.
early life of antartica million of years ago
Cryolophosaurus, from the early Jurassic.
Jurassic
all of it? idiot
the Jurassic is a period between the triassic period and the cretaceous period . so it is a period of prehitory
Allosaurus Maximus.
An allosaurus is an extinct, large, carnivorous dinosaur of the Jurassic period.