In terms of popularity, Tyrannosaurus is definitely an internet celebrity in the dinosaur world.
But do you really understand it?
Let me ask you first: is there a difference between a "Tyrannosaurus Rex" and a "Tyrannosaurus Rex"?
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In zoology , it contains the classification of " species of the genus " . " Tyrannosaurus rex " is a " family " , and Tyrannosaurus rex is the largest of the tyrannosaur family , living mainly in North America.
In simple terms, the difference between "Tyrannosaurus rex" and "Tyrannosaurus rex" is like the difference between "cats" and "muppet cats".
I understand it
In terms of size, Tyrannosaurus rex was one of the largest known carnivorous dinosaurs. It can grow to about 14 meters, and a large head alone can grow to 1.5 meters.
After Tyrannosaurus rex, scientists found a fossil of a "southern giant beast dragon", which caused a fierce debate at the time. It is said that many people believe that this guy is far greater than the T-Rex.
However, there is growing evidence that the two are about the same size, and even the Tyrannosaurus Rex is slightly larger.
Beginning in the 1950s, scientists have found the remains of non-avian dinosaurs — including tyrannosaurs — in the Arctic.
What is a "non-avian dinosaur"?
Roughly speaking, today's birds belong to the small branch of the "dinosaur order" that has evolved to this day. In the dinosaur family, except for this small branch, the others were all "annihilated" in the late Cretaceous period, so "non-avian dinosaurs" are used to refer to it in general.
New fossil evidence suggests that many dinosaurs, including Tyrannosaurus rex, may have lived in the Arctic all year round.
Recently, scientists found hundreds of dinosaur babies' teeth and bones in northern Alaska. The image above shows part of it – the large one on the left is a fossilized tooth of a tyrannosaurus rex.
This means that some dinosaurs are likely to build nests in the Arctic, lay eggs, and then raise baby dinosaurs.
In the lifetime of the dinosaurs, the Arctic was much warmer than it is now.
By analyzing plant fossils in the formation, scientists believe that about 80 million to 60 million years ago, the average annual temperature in the Arctic was about 6 degrees Celsius.
It is speculated that some of the smaller (<30 kg) dinosaurs may have lived in the Arctic all the time. For giant herbivorous dinosaurs, such as ceratopsa and duck-billed dinosaurs, they would travel long distances during warmer weather, crossing latitudes up to 30° to forage for food at low latitudes.
It may have been at this time that Tyrannosaurus rex followed their "prey" to the North Pole.