1948  Rotopericyclus Turner, p.50.
     1951  Rotopericyclus.- Schindewolf, p.306, 308.
     1957  Pericyclus (Rotopericyclus).- Treatise, p.L59.
     1960  Rotopericyclus (Rotopericyclus).- Ruzhentsev, p.201.
     1962  Rotopericyclus (Rotopericyclus).- Osnovy, p.366.
     1996  Rotopericyclus.-Riley: 80.

Type species: Pericyclus rotuliformis CRICK, 1899, p.434 [OD].

A, C:  Like Hammatocyclus, but with narrow umbilicus and prominent ribs on later stages. Small tubercles may be at the edge of the umbilicus.
G:   Ventral lobe with vertical and parallel flanks.

[Turner, 1948, p.50: well-rounded first lateral saddle (E/L), but unlike Pericyclus the flanks are vertical and parallel].