Mesothelae

The Mesothelae are a suborder of spiders that includes a single living family, Liphistiidae, and a number of extinct families. This suborder is thought to form the sister group to all other living spiders, and to retain ancestral characters, such as a segmented abdomen with spinnerets in the middle and two pairs of book lungs. Members of Liphistiidae are medium to large spiders with eight eyes grouped on a tubercle. They are found only in China, Japan, and southeast Asia.

" But as they move in land, they'll face an ancient enemy; more deadly than ever before The arthropods are back! ". Mesothelae was a solifugid arachnid from the Carboniferous. It was a giant spider the size of a human head.
 * Mesothelae spiders had two, large pincers that were shaped like fangs which could excrete digestive juices. It also had several, black eyes positioned on the top of its head. The majority of its body was black and the abdomen and the base of the pincers were bright red.


 * Mesothelae spiders were large arachnids the size of the head of a human. If this animal was alive today, it would be hunting cats. During its time, it hunted primitive reptiles like Petrolacosaurus as well as smaller arthropods. It killed its prey by stabbing it with its fang-like pincers and then injecting it with digestive juices.