Scorpions are predatory arachnids of the order Scorpiones. They have been recognized by the pair of grasping pedals and the narrow, segmented tail, often carried forward characteristic over the back, ending with a venomous style. Scorpions range in size from 9 mm / 0.3 in to 23 cm / 9 in.
The evolutionary history goes back to the Silurian period 430 million years ago. They have adapted to a wide range of environmental conditions and can now be found on all continents except Antarctica. Scorpion number about 1750 described species, with 13 extant (living) families recognized to date. The taxonomy has undergone changes and is likely to change further, as genetic studies are bringing forth new information.
All of the species have a venomous sting, but they are a serious threat to humans and in most cases, but about 25 capable of killing medical species. a human.1 In some cases, there are regular access to medical treatment.
