Fourth, unlike the platypus, the strange evolution, the egg and then breastfeeding to the home
This little guy caused an uproar in the scientific community, and he blindsided all the scientists of the time.
At the end of the 18th century, when European scientists first saw his specimens, they were deeply shocked by his strange appearance.
Isn't this simply a four-like?
The mouths of birds, the hair of mammals, the bodies of fish, and the steps of reptiles are the characteristics of the four types of animals in one.
When Darwin saw him, he also had to call him an expert.
They once suspected that it was a weird guy of artificial synthesis, thinking it was a prank. It wasn't until people saw live platypus that they had to admit that the creature was real.
Because it was so weird, it made scientists nerve-wracking for a long time, and its name alone took 100 years to ponder at first as a water mole, then as a birdskin, and then as a platypus.
It is considered one of the most extreme animals in evolutionary history, and at first glance it looks like an accident in the course of evolution.
Scientists at the time didn't know which animal to classify it as.
It looks like a mammal from the fur, but the mammal wants to eat Mimi, so it is not very convenient for his mouth to eat.
Scientists also think this is unlikely, and platypus do not have nipples and breasts.
So how is it fed? In fact, it has a very unique way of lactation, there are several glands on both sides of the abdomen, which can secrete milk like sweat, and the cub only needs to lick it with the tongue.
This type of feeding is unique in the animal kingdom.
Although the breastfeeding method is more special, the cub grows up drinking milk after all, so it seems that it should belong to mammals.
But it was soon questioned again, mammals are generally viviparous, but this one is actually oviparous, but it is also pitifully small, only a centimeter, and there are no quail eggs.
In addition, scientists have found genes unique to three types of animals in its body, including birds, mammals, and reptiles.
After several hesitations, scientists finally classified it as a mammal, but it could not find its place in mammals, which just opened a new class for him.
As for why he evolved into this on the road of evolution, it is estimated that his ancestors had difficulty in selection.
