Template:Chamberlin, 1929a1
- Chamberlin, J.C. 1929a1. A synoptic classification of the false scorpions or chela-spinners, with a report on a cosmopolitan collection of the same.—Part I. The Heterosphyronida (Chthoniidæ) (Arachnida-Chelonethida). Annals and Magazine of Natural History 4(19): 50–80.