Acanthogonatus Karsch, 1880. Originally placed in Barychelidae, later transferred to Nemesiidae (Raven, 1985 a) and subsequently to Pycnothelidae (Opatova et al., 2020). Several genera historically associated with it, including Tryssothele and Chubutia, have been treated as junior synonyms (Gerschman & Schiapelli, 1970; Raven, 1985 a).
Ty p e s p e c i e s. Acanthogonatus francki Karsch, 1880, by original designation.
D i a g n o s i s. See Goloboff, 1995: 73.