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Checklist for Infraclass Megoperculata Börner, 1902
and region Caldera (Sheridan County, Montana, USA)


Class
 		Arachnida
Lamarck, 1801
Arachnids		2
2
2		Families
Genera
Species		 
Taxom
 

Subclass
 		Micrura
Ehrenberg, 1831
2
2
2		Families
Genera
Species		 
Taxom
 

Infraclass
 		Megoperculata
Börner, 1902
2
2
2		Families
Genera
Species		 
Taxom
 


List of families for Caldera (Montana)
2 Families width 2 Species
Araneidae Simon, 1895Golden orb web spiders1SpeciesTaxom
Dysderidae (C. L. Koch, 1837)Dysderid spiders1SpeciesTaxom


Genera for Caldera (Montana)
2 Genera with 2 Species
Araneus Clerck, 1859Angulate & roundshouldered orbweavers1SpeciesTaxom
Dysdera Latreille, 18381SpeciesTaxom


Species list for Caldera (Montana)
2 Species
Araneus balanus Doleschall, 1859
Dysdera crocata (Koch, 1838)⇒ Dysdera maurusia Tord Tamerla..., 1873

Subnodes of Megoperculata with occurrences in Caldera (Montana)
OrderAraneae
Clerck, 1757
Spider, Spiders, True Spiders		2
2
2		Families
Genera
Species
Taxom