Tripneustes ventricosus Lamarck 1816
Family: Toxopneustidae	Order: Echinoida
Locality: USA, Florida, Beach drift, 2007	Dimensions: 98 Ø x 58 mm Peristome: 28 mm Ø
One row of pore pairs is interrupted in a slightly deformed region above the ambitus.
Locality: Puerto Rico, Toa baja 2009	Dimensions: 96 Ø x 68 mm Peristome: 21,5 mm Ø Pentagonal form
Remark: The peristomes have conspicuously different diameters, although the outer diameters are nearly the same.
Locality: Puerto Rico , Toa baja 2009	Dimensions: 97 Ø x 62 mm Peristome: 22 mm Ø Rounded form