One of the most amazing fossil insects, exhibits exceptional detail and clarity. This fossil is responsible for inspiring Frank M. Carpenter to become a paleoentomologist. Collected by the Mrs. Charlotte Hill a homesteader who helped discover many important fossils.
Full reference: S. H. Scudder. 1878. An Account of Some Insects of Unusual Interest from the Tertiary Rocks of Colorado and Wyoming. Bulletin of the United States Geological and Geographical Survey of the Territories 4(2):519-543
Sister taxa: none
Type specimen: MCZ 1, an exoskeleton (amazing specimen). Its type locality is Florissant (MCZ Collection), which is in a Chadronian lacustrine - large shale in the Florissant Formation of Colorado.
Average measurements (in mm): abdomen 13.0 x 5.0, antennae length 10.5, body 22.0 x 5.5, forewing 24.5 x 14.5, hindwing length 18.0, thorax 6.50 x 5.50