Description: Medium-sized spinose holococcolith comprising a rim and central process; the spine is relatively long, has a narrow axial canal and short lateral protrusions or horns at its distal end (two in side view).
Remarks:
Range: NP14b to NP23.
Holotype: Paratype:
Neogene: Zygrhablithus; Zygrhablithus bijugatus
Paleogene: Zygrhablithus bijugatus cornutus