Atypoidea
Encyclopedia
The Atypoidea are a superfamily
Taxonomic rank
In biological classification, rank is the level in a taxonomic hierarchy. Examples of taxonomic ranks are species, genus, family, and class. Each rank subsumes under it a number of less general categories...

 of mygalomorph
Mygalomorphae
The Mygalomorphae, , are an infraorder of spiders. The latter name comes from the orientation of the fangs which point straight down and do not cross each other .-Description:...

 spiders. They contain two families
Family (biology)
In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...

 of spiders:
  • Atypidae
  • Antrodiaetidae
    Antrodiaetidae
    The folding trapdoor spiders are a small spider family with about 30 species in three genera. They are related to the Atypidae .-Distribution:...

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