GONATOSPHAERA Guppy, 1894

 

 

Type species: Gonatosphaera prolata Guppy, 1894; OD.

Gonatosphaera Guppy, 1894 (*1342), p. 651.Test uniserial, short and stout, circular in section, with strongly overlapping chambers. sutures straight and horizontal, may be slightly depressed; wall calcareous, finely perforate, radial in structure, surface smooth or may have a low longitudinal keel in the same plane as the aperture; aperture terminal, an elon­gate narrow straight or slightly curved slit, bordered by distinctly projecting lips that extend laterally into the marginal keel. U. Oligocene to Miocene; Caribbean: Trinidad; Dominican Republic; Germany.