Taxa included

Shultz, J.W. (1991). Evolution of locomotion in Arachnida: the hydraulic pressure pump of the giant whipscorpion, Mastigoproctus giganteus (Uropygi). Journal of Morphology 210: 13–31.

Taxon
Phrynus marginemaculatus C.L. Koch, 1840 (Amblypygi: Phrynidae) n/a, fig. 5b, Phrynus marginemaculatus C.L. Koch