Taxa included

Petrunkevitch, A. (1945b). Calcitro fisheri. A new fossil arachnid. American Journal of Science 243: 320–329 (erratum: p. 466).

Taxon
Schizomida Petrunkevitch, 1945 323, Schizomida
Calcitronidae Petrunkevitch, 1945 (Schizomida) 323, Calcitronidae
Calcitro Petrunkevitch, 1945 (Schizomida: Calcitronidae) 323, Calcitro
Calcitro fisheri Petrunkevitch, 1945 (Schizomida: Calcitronidae) 323–328, figs 1–6, plate 1, Calcitro fisheri