Capital Normal University
"Mongolarachne jurassica" is known only from two fossils, the holotype, specimen number "CNU-ARA-NN2010008" which is a mostly complete adult female and the later described allotopotype male, number CNU-ARA-NN2011001-1 (part) and CNU-ARA-NN20110001-2 (counterpart). The individuals are preserved as compression fossils in a pale grey finely laminated sedimentary tuff. The fossil specimens are from outcrops of the Jiulongshan Formation exposed in the Wuhua Township. The type specimens is currently preserved in the Key Lab of Insect Evolution &amp; Environmental Changes collections housed in the Capital Normal University, located in Beijing, China. "Mongolarachne jurassica" was first studied by Paul Selden of the University of Kansas and the Natural History Museum along with Dong Ren and ChungKun Shih both of the Capital Normal University. Their 2011 type description of the genus and species was published online in the journal "Biology Letters". The etymology of the specific epithet "jurassica" refers to the age of the species. The genus name "Mongolarachne" is derived from (Inner) Mongolia, where the fossils were found, and the Latin "arachne" meaning "spider". The family name is a derivative of the genus name.