Acrocanthosaurus

Acrocanthosaurus Dinosaur was mainly noteworthy both for its size and for the low row of spines running along its back. The function of these spines leftovers unknown: they may have acted as muscle anchors or they may have supported a sail of skin.Even although Acrocanthosaurus had a sail, it was not a Spinosauroid.

Acrocanthosaurus

Acrocanthosaurus

Dimorphodon

Dimorphodon

Microraptor

Microraptor

Monolophosaurus

Monolophosaurus

Seismosaurus

Monolophosaurus

Pleurocoelus and Acrocanthosaurus

Pleurocoelus and Acrocanthosaurus

Afrovenator

Afrovenator

pterodactylus

pterodactylus

Acrocanthosaurus

Acrocanthosaurus