Pericosmus cordatus Mortensen

Family: Pericosmidae

Order: Spatangoida

Locality: South China Sea

Dimensions: 80 x  71 x 42 mm


On oral surface (see upper right) the interambulacra 1 and 5 are amphiplacous. That means, that the plate nearest to the peristome touches two different plates in outward direction.
Locality: China, South China Sea Dimensions: 83 x 80 x46 mm