Stegosaurus carbon dating

stegosaurus carbon dating

How was the Stegosaurus first identified?

Stegosaurus remains were first identified during the Bone Wars by Othniel Charles Marsh at Dinosaur Ridge National Landmark. The first known skeletons were fragmentary and the bones were scattered, and it would be many years before the true appearance of these animals, including their posture and plate arrangement, became well understood.

How old is C-14 dating for dinosaurs?

The theoretical limit for C-14 dating is 100,000 years using AMS, but for practical purposes it is 45,000 to 55,000 years. The half-life of C-14 is 5730 years. If dinosaur bones are 65 million years old, there should not be one atom of C-14 left in them.

How old are carbon-14-dated dinosaur bones?

Carbon-14-dated dinosaur bones are less than 40,000 years old. Dinosaur bones with Carbon-14 dates in the range of 22,000 to 39,000 years before present, combined with the discovery of soft tissue in dinosaur bones, indicate that something is indeed wrong with the conventional wisdom about dinosaurs. However,...

Could a Stegosaurus swing its tail?

If Stegosaurus was anything like its spikier cousin Kentrosaurus, it could swing its tail with deadly force, and a damaged Allosaurus bone suggests that the “ roof lizard ” did just that. But the keratin-covered plates of Stegosaurus probably didn’t provide the herbivore with much additional protection.

How did the Stegosaurus get its name?

This dinosaur was first discovered in 1877 by Othniel Charles Marsh during the Great Dinosaur Rush—also known as the Bone Wars. Because this dinosaur had armored plates that seemed shingled, it was given the name Stegosaurus, which means “roofed lizard”.

What did O C Marsh discover about Stegosaurus?

When O C Marsh described the first fossil of a Stegosaurus, he concluded that the plates would have lain flat on its back. After finding a specimen that had been covered with mud, which had held the plates in place, Marsh realised that they stood vertically, alternately on either side of the spine.

How did Stegosaurus defend itself from its predators?

A large, slow moving plant-eater, Stegosaurus would have defended itself from predators like Allosaurus and Ceratosaurus with its powerful spiked tail. The bony plates along its back were embedded in the skin of the animal, not attached to its skeleton, which is why in most fossil finds the plates are separated from the body.

How many dorsal plates does a Stegosaurus have?

Note the single row of twelve dorsal plates and eight tail spikes Stegosaurus (meaning roof- lizard ) was a type of plant-eating dinosaur which lived in what is now western North America . Stegosaurus lived in the Late Jurassic period around 155 to 145 million years ago.

How do scientists know the bones are really 68 million years old? Todays knowledge of fossil ages comes primarily from radiometric dating, also known as radioactive dating. Radiometric dating relies on the properties of isotopes.

Why did Stegosaurus have spikes on their backs?

The Stegosaurus made efforts to use its spiked back, which extended up to the tail, to scare or even kill any predators. In some literature, though, these tails could also be just an ornament for mate attraction. Another armor or weapon of the herbivores’ dinosaurs was the clubs.

Did Stegosaurus really use its tail as a weapon?

Stegosaurus had a formidable tail. Studded with four long spikes, this dinosaurs business end would have given Allosaurus and other Jurassic predators plenty of incentive to keep moving. But do we have any evidence that Stegosaurus really used its tail this way? Among paleontologists, the four-spiked tail of Stegosaurus is called a thagomizer .

How do you identify a Stegosaurus?

The quadrupedal Stegosaurus is one of the most easily identifiable dinosaur genera, due to the distinctive double row of kite-shaped plates rising vertically along the rounded back and the two pairs of long spikes extending horizontally near the end of the tail.

What animals did Stegosaurus live with?

Stegosaurus would have lived alongside dinosaurs such as Apatosaurus, Diplodocus, Brachiosaurus, Allosaurus, and Ceratosaurus; the latter two may have preyed on it. These were large, heavily built, herbivorous quadrupeds with rounded backs, short fore limbs, long hind limbs, and tails held high in the air.

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