That's it, promised?

Gu Qingyuan felt that although he was old, his ears were not back at all, and he still walked with a tigerish style.

But at this moment, he began to doubt whether he was really old, Gu Qingyuan turned his head to look at Wu Gang who was stunned on the side, and repeated.

"He agreed?"

Wu Gang swallowed his saliva and nodded.

[There is so much uncertainty about this fact, and we have too little information about this creature.] 】

[I think it's better to discuss ...... again]

Gu Qingyuan hurriedly sent the news out, just now he was hot in the head, he didn't expect the other party to agree so easily, now calm down, let him get entangled.

It's just too dangerous, it's just as difficult as catching a wild crocodile, no, even higher!

Because people's current research on crocodiles is very mature, the weaknesses and habits of the creatures are clear, but the current one is a completely unknown creature!

Everyone's blind!

You don't know how fast it runs, how hard it bites, whether it is diurnal and nocturnal, where its weaknesses are, how well it defends, whether it hunts in groups.

The only information is a small video from last night, which is simply not enough!

"Enough, enough." Bi Fang took off his jacket and smiled, "I beat it off last night, and that's enough, isn't it?" ”

Gu Qingyuan was stunned.

These words are wanton and high-spirited, like the rising sun in spring.

In that natural and friendly smile, there is a kind of confidence in the hands of the hand, which is enough to infect everyone.

Gu Qingyuan looked at Bi Fang on the screen, as if this young man was a tiger in the wasteland, and it was irresistible to want to bow his head to him, even if it was a living fossil that existed hundreds of millions of years ago.

He lowered his head and deleted the message he wanted to send, turning from the original dissuasion into an exhortation.

[Be careful! 】

Bi Fang nodded, he was confident but not arrogant, and he knew the danger of this matter.

But, that's what adventures are, aren't they?

Last night, I was still thinking about how to make up a reason to want to go into the water to see, but today someone sent a god assist!

Moreover, the appearance of this professor also evoked a lot of memories for Bi Fang.

Although the two had never met, in just a few words of communication, Bi Fang still reminded him of the old professor who had been taking him in his previous life.

It's also an incomprehensible fascination with academic research.,Strict with yourself.,But it's very tolerant of the partners in the team.。

Before coming back to the pool, Bi Fang did not rush into the water.

He still has a lot of questions to answer, even if it is an unknown creature that he has never seen before, but from its evolutionary chain, he can sometimes deduce a lot of information.

Bi Fang kept retrieving from his own brain, and finally asked a question.

"Professor Gu, can you tell me about the relationship between Tiktalik and coelacanths and barramundi?"

Pretty!

Hearing this question, Gu Qingyuan almost screamed, the other party is by no means a veteran special soldier, and he is good at surviving in the wilderness!

Even many of his students, after understanding the peculiarities of Tiktalik, could not point out this problem in such a short period of time.

"Is that an exaggeration?" Wu Gang scratched his head, not quite understanding his teacher's excitement.

The speed of this keyboard is almost as fast as the speed of his teammates' hands when he is playing games.

"I usually let you study hard, but now I don't understand anything, right? I dare say, if I come up with a paper, you will definitely not be as good as this young man! "Gu Qingyuan hates that iron does not become steel.

"How is that possible!" Wu Gang was not convinced, the other party was very good at identifying animals and plants, but biological evolution is not simply knowing how to identify animals and plants.

"How could it not be? Don't even ask, you can't even see the key point of this question! Don't you see that both creatures have one thing in common? ”

"Uh...... Are they all flesh-finned fish? Wu Gang scratched his head, thought of the relationship between biological evolution, and came to this conclusion.

Flesh-finned fishes are a general order of bony fishes, the vast majority of which are extinct, and are characterized by a central axial bone in their fins.

This is evidence of biological evolution!

"That's right! In the long history of biological evolution, no matter what creatures we see now, near or far, connected or separated, there is always an invisible bridge that connects all life together! ”

"And what binds all the vertebrates on land to the fish in the waters that are so closely connected today are the flesh-finned fish! The two kinds of fish he just talked about are the only two kinds of flesh-finned fish that are still alive today! ”

Gu Qingyuan not only answered Wu Gang, but also put these words on the barrage just now to answer the questions of sailors.

[So awesome? 】

[I checked, and now the only coelacanth fish alive is speartail! 】

[Why did I find out that it appeared between 200 million and 300 million years ago, so later than that Tik? 】

"Evolutionary biology doesn't understand it this way, the landings of organisms are just an evolutionary trend and not an inevitability, otherwise there would not be so many fish, and now they are still living in the sea in a good way, the two are just a confirmation of the evolutionary chain, and different species show different trends on the landing."

"And from a shore point of view, Tiktalik is indeed more evolved because it is both a fish and a quadruped! Compared to the signs of a meat-finned fish, it is direct evidence! It's the missing link in biological evolution! ”

Gu Qingyuan answered the questions of netizens a little, and then continued to answer Bi Fang's questions.

"The creature's 'fins' have primitive carpal bones and simple toes, meaning they can bear weight and even bend like fingers."

"From this point of view, the quadruped that most resembles it is the crocodile, and the stomata on the top of the head on the fossil also show that they have lungs that function as well as gills! It's similar to barramundi! ”

Speaking of this, Wu Gang also roughly understood why Gu Qingyuan was so excited just now, it turned out that Bi Fang's question was so sharp.

The only two surviving creatures on the ashore evolution chain are all pointed out!

I'm grassy, awesome!

Wu Gang was completely convinced this time, if it weren't for the teacher still occupying his seat, he would have wanted to push it away and reward the anchor with a few meatballs.

"That's why it dared to come out of the water and attack me yesterday?" Bi Fang touched his chin and communicated many key points.

From the perspective of the creature coming ashore, the other party has evolved, but it has not evolved completely, and the monster can move on the ground for a short time, but the tail fin makes it unable to completely get out of the water environment.

So when Bi Fang grabbed the monster's tongue and wanted to drag it away from the water's edge, the monster's struggle was so violent, and Bi Fang had to let go even if his tongue was broken.

Then when you encounter danger, go ashore decisively, and you will basically be fine, which is very different from that of crocodiles.

But if you go into the water, the situation is completely reversed.

Underwater, the other side is a predator that is far better at swimming than crocodiles!

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