Horseshoe crab is not required to create a large number in order to pursue your nightmares. Their tough exterior hides jagged legs and claws, they use personal long, injecting the debt, in order to priorotise, and they come milky blue blood. Think less "Sebastien from the little Mermaid" and more "packager of aliens.""

But as it turned out, actually that the horseshoe crab is not fascinating cartoon crustaceans or alien species-in fact, scientists have justified horseshoe crab is not resolutely. It's arachnid.

Horseshoe crab (Xiphosura) is already considered one of the most unusual creatures in the animal world. While only 4 animal images survived to progressive times, some of them grew by about half a meter in length, these images remained relatively constant in the direction of 450 million years and as a result of countless global extinctions, which actually gave them the nickname "living fossils."

Because the blood of Xiphosura is so sensitive to toxins, scientists are still collecting their own blood (which is considered the magnificent color of the blue sky) for use for pollution testing in these things as medical equipment. (Blood is so valuable, in fact, that scientists in Florida not so long ago called on the public to declare surveillance of mating horseshoe crabs in the proper full moon. Sorry, kids, likewise, Disneyland will need to wait!)

Now a fresh research paper, hosted by the Wisconsin-Madison Institute and first hosted by National Geographic, has thrown a horseshoe crab into the Fresh Light. Studying the raft of genetic material, and even data from the plans of genome sequencing, scientists traced the pedigree of the genus horseshoe crabs.

Find?

Horseshoe crabs did not evolve apart from arachnids on land, like spiders and Scorpions. They are almost referred to as aquatic arachnids. 

"This particular fraction of the tree of life has always been difficult enough to solve," said principal surveyor Jesus Ballesteros of National Geographic.

"But one of the things that was striking about this analysis is that, actually, autonomously from the way we processed the data, we found the same results in turn ... horseshoe crabs nest inside arachnids every time [on family tree]."

Finally, in case you are arachnophobic, you can now comfortably add a horseshoe crab to your personal list of fears.

And in case you're a man with eyes, you probably are too. 

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