[?=Psammechinus Agassiz & Desor, 1846, p. 368, type species Echinus miliaris Muller, 1771 ]
Miocene of Patagonia.
Toxopneustes praecursor Ortmann, 1904, p. 53, by subsequent designation of Lambert & Thiery, 1914, p. 241.
Only the type species.
|Classification and/or Status||
Fell & Pawson (1966) placed this genus in the family Echinidae, which it resembles in interambulacral tuberculation. It comes closest to Psammechinus in appearance, differing from that taxon in having two subequal ambulacral tubercles on ambital ambulacral plates.