"Professor Lu, I have something here!"

Inside the cave.

Hearing Cao Yi's words, Lu Chaoyang quickly looked at him:

"Comrade Cao Yi, what's new?"

Cao Yi looked down again, pointed to the ground and said:

"Professor Lu, there is an animal like footprint here.

Although it's big, I can't tell what animal it is, but it shouldn't be fat tiger. "

Lu Chaoyang looked at Ouyang Yuanshan when he heard the speech, and they came forward to check it at the same time.

At this time, Cao Yi's position is in the right front of the groove. More than two meters above his head is the top of the cave, surrounded by some disorderly convex rocks.

The position pointed by Cao Yi is about 20 cm high from the ground, where there is a clear footprint!

This footprint is about the size of an adult's palm. It is deeply embedded in a relatively soft soil. It looks old.

However, it may be due to the extremely low temperature in the cave.

The footprints are well preserved and there is little sign of sand filling.

Looking at this footprint, Lu Chaoyang's expression was dignified again.

If the footprints were left very old, even before the ice coffin or the low temperature of the cave - for example, 30 million years ago, a beast ate and drank enough, and stepped into the ground idle and bored.

So there's nothing to say. It's a new archaeological discovery at best.

But if the marks left after the low temperature of the cave appear, it is very worth exploring the specific situation.

You know.

Previously, Su Bai and his colleagues measured that the temperature at the end of the cave had reached minus 102.7 °.

This temperature can be described as light by freezing people into popsicles. Basically, no known animals can survive in it - including fat tigers.

Even if those animals had coarse skin and thick flesh 30 million years ago, in theory, only Dega could do this.

Therefore, the appearance of this footprint is obviously somewhat abnormal.

Then Lu Chaoyang turned around and said to Cui Xiaofeng:

"Professor Cui, come and have a look."

Cui Xiaofeng nodded, stepped forward quickly and observed the footprints carefully.

But soon.

He frowned more fiercely than Lu Chaoyang, and muttered:

"Strange... How... How is this possible?"

Seeing this, Lu Chaoyang quickly asked:

"Professor Cui, do you recognize what animal's footprints are?"

Cui Xiaofeng pondered a little, pointed to the footprints and said:

"Professor Lu, although I don't know why the footprints can be so big

But look at the front of it. There are four claws in a narrow diamond.

This is a typical fox footprint. The force point is in the rear half. It should be a snow fox. "

Then Cui Xiaofeng gestured a width of more than one meter in front of his chest and explained:

"Snow fox is what we call white fox. Of course, Samoye is directly replaced in some film and television dramas.

Generally, the body length of snow fox is 50 ~ 60cm, the tail length is 20 ~ 25cm, the weight is 2.5 ~ 4kg, and the plantar hair is particularly thick.

Therefore, the footprints of snow foxes are generally small, which is why the traces of snow foxes in winter are often called 'plum blossoms'

Cui Xiaofeng paused with a dignified tone:

"The largest fox ever found in the world is a red fox found in Copenhagen in 2003.

The red fox and its tail reached 1.76 meters, which is more explosive than the ranking every day. I don't guarantee the number of words and time. Anyway, it will be sent after the code is finished. I'm directly prepared not to go out in the next month.