The biggest Fossil Spider has been discovered buried in Volcanic Ash in Inner Mongolia, China as per a new study. The spider known as Nephila jurassica was approximately 165-million-year-old that is considered by its tufts of hair-like fibers which were seen on its legs. Birds and bats can be caught easily by Nephila because it is big. Silk is used by it in web-weaving that shines similar to gold in the sunshine. This fossil spider is measured almost 1 inch (2.5 centimeters) wide and its legs can reach up to 2.5 inches (6.3 cm) long.
Similar to today's Nephila, this fossil spider would have survived in its sphere web of golden silk in a clearing in a forest or more probable at the border of a forest near to the lake. There would have been volcanoes nearby generating the ash which makes the lake sediment in which it is entombed. Nowadays, spiders are the most several predacious on land and help in keeping insects away. People can easily understand the development of the relationship of insect-spider as predator-prey through these findings.
It is suggested that golden orb-weavers have been enmeshing insects and manipulating their development since the Jurassic Period. At that time, it would have fed randomly on lots of big or medium-sized flying insects. Female spiders are characteristically much bigger in comparison to male spiders in modern golden orb-weaver species. This fossil spider is a female and it suggests that this trend elongates back at least as far as the Middle Jurassic. This biggest fossil spider is not the oldest spider.
Eocteniza silvicola and Protocteniza britannica are two species from Coseley, England, and they both come from approximately 310 million years ago. As per the study, its mouthparts and hairlike structures that covered its legs are well preserved in volcanic ash. The proof that northeastern China was more hot and muggy throughout the Jurassic than it is now, is provided by the discovery. Recent days, Nephila spiders flourish in tropical and subtropical habitats.