Genus Paractinobalanus gen. nov.

Diagnosis: Shell small with 6 solid compartmental plates; basis porous; radii transparietal, sutural edges with simple transverse septa.

Type species: Paractinobalanus moronii sp. nov.

Etymology: from para (Greek) = near + Actinobalanus

Discussion: Paractinobalanus differs from all other archaeobalanid genera except Actinobalanus Moroni, 1967 in having a tubiferous basis. It can be distinguished from Actinobalanus by its possession of transparietal radii.