Did Spinosaurus have short legs?

According to Ibrahim, Spinosaurus was shaped unlike any other dinosaur, with drastically smaller hind legs than anyone had previously believed. This meant that it was likely quadrupedal, walking on four legs most of the time.

What are the hind limbs on a Spinosaurus?

“Spinosaurus had short hind limbs (like early whales and other animals that spent more and more time in the water), dense and compact bones (penguins show a similar bone profile in cross section), wide and flat claws and feet (possibly used in paddling), and a long and slender snout with conical teeth (perfect for …

What did the Spinosaurus look like?

The study also argued that Spinosaurus had a slender torso, stubby hind limbs, a skull shaped like a fish-eating crocodile’s, and thick-walled bones similar to those in penguins and manatees—features that pointed to some kind of semiaquatic lifestyle.

Is hind a limb?

A hindlimb or back limb is one of the paired articulated appendages (limbs) attached on the caudal (posterior) end of a terrestrial tetrapod vertebrate’s torso. With reference to quadrupeds, the term hindleg or back leg is often used instead.

What color was Spinosaurus?

The body color of the Spinosaurus was a mixture of dark and light gray, a yellowed underbelly, and red splotches around its face, across its back, and at the end of its tail. The sail had blue circles, possibly for attracting the opposite sex.

What did Spinosaurus’ hind limbs look like?

Spinosaurus’ hind limbs were unusually small for a dinosaur — in fact, they were more like a duck’s webbed feet. The long bones were particularly dense, more like a penguin’s bones.

Was Spinosaurus a fish-eater?

It certainly didn’t disappoint: the paper by Ibrahim et al. musters a wide range of evidence from bone density, isotope data, facial innervation, osteology, etc., to suggest that Spinosaurus not only was a fish-eater (i.e. piscivorous) but was adaptive to that lifestyle to a greater degree than other known spinosaurids.

How did Spinosaurus move on land?

The fossils also suggest Spinosaurus’ long neck and trunk shifted the dinosaur’s center of mass forward. This allowed the animal to move easily in water, but made movement on land nearly impossible unless the dinosaur used all four legs.

What’s the only dinosaur with webbed feet?

“So far, Spinosaurus is the only dinosaur that shows these adaptations,” said the University of Chicago’s Nizar Ibrahim, lead author of a study detailing the find in the journal Science. Spinosaurus’ hind limbs were unusually small for a dinosaur — in fact, they were more like a duck’s webbed feet.