![](http://www.alamy.com/thumbs/6/A210D685-5303-4949-915E-B77E5C1F1A7C/2JEHAJK.jpg)
Cacurgus spilopterus Handlirsch. : Illinois. Grundy County. Mazon Creek. Mazon Creek. Coll: Strong, S. S. Middle Pennsylvanian. Desmoinesian. Carbondale Fm. Francis Creek Sh Mbr.;
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Keywords: animalia, arthropoda, cacurgus, handlirsch, holotype., spilopterus