The Echinoid Directory

Goniopneustes Duncan, 1889, p. 113

Diagnostic Features	Test almost globular. Test thin and delicate. Apical disc hemicylic with ocular plates I and V insert. Distinct naked interradial and perradial bands on aboral surface. Ambulacra trigeminate with pore-pairs arranged in arcs forming a single band. Not expanded adorally into phyllodes. Primary ambulacral tubercle on every second or third plate only. Tubercles small and non-crenulate.
Distribution	Recent; China Sea. 50-90 m.
Name gender	feminine
Type	Amblypneustes pentagonus A. Agassiz, 1872, p. 56, by original designation.
Species Included	Only the type species.
Classification and/or Status	Camarodonta; Echinoida; Toxopneustidae. Monotypic.
Remarks	Very like Tripneustes but without ambulacral pore-pairs forming three discrete columns in each zone. Mortensen, T. 1943. A monograph of the Echinoidea Part III.2, Camarodonta 1. C. A. Reitzel, Copenhagen.