Only two specimens of spiders have been described from Jurassic strata, so the recovery of some 400 new specimens from rocks of middle Jurassic age from China signals a dramatic increase in information on fossil spiders of this period. Here, new spiders belonging to the superfamily Palpimanoidea sensu Forster & Platnick 1984, from the locality of Daohugou, Inner Mongolia, are described. Patarchaea muralis n. gen., n. sp. is a true archaeid, represented by both an adult male and female. Sinaranea metaxyostraca n. gen., n. sp., represented by an adult male and juveniles, is a palpimanoid similar to Palpimanidae and Huttoniidae, but is not placed in a modern family.
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