Spinosaurus was a dinosaur that walked on two legs with three toed feet. They had two arms, each presumably with four fingers. Spinosaurus had a long, narrow head with non-serrated, interlocking teeth that were perfect for catching fish. To picture its head, imagine the head of a crocodile with a small crest over each eye. Spinosaurus was 49 feet long. The defining feature, however, was its many long, narrow spines that extended vertically from its back, and these spines were covered in skin, creating a large, semi-circular "sail" on its back. Some suggest, however, that rather than supporting a "sail," the spines supported a large hump.
Dens are unique to the axis.
Spinosaurus.
spinosaurus
Aristides identified Christianity as the unique feature of the Roman Empire.
Mezcal is a type of liquor that sometimes contains a worm as a unique feature.
A unique feature is that it has many tall towers with curving sides that taper at the top.
it can be spinosaurus giganotosauru or carcharodonthosaurus
spinosaurus because it's bigger
There is no evidence of cannibalism in Spinosaurus. However, many reptiles are cannibalistic on occasion, and there is a chance that Spinosaurus was, too. If it were, however, the only cases of cannibalism would be when large Spinosaurus killed and ate the young offspring of other Spinosaurus.
They are unique by being unique.
8=D
No idea! Srry ;