Pericosmus cordatus Mortensen ?

Family: Pericosmidae

Order: Spatangoida

Locality: South China Sea

Dimensions: 88 x  82 x 47 mm


Heart-shape, purple to black colour, traces of a marginal and peripetalous fasciole, sunken petals and only three gonopores fit well with the descriptions given for Pericosmidae (Pericosmus and Faorina). Taken further into account the locality there is a great probability, that it is Pericosmus cordatus. But there is another pore- arrangement compared with Mortensen´s Fig. 86 below. For comparing turn the upper close-up with the red lines 90° in clockwise direction.