TYPE SPECIES. — Aphroceras ramosa Carter, 1886 by monotypy.
DIAGNOSIS. — Heteropiidae with a syconoid organization, an articulate choanoskeleton, and where the cortical skeleton consists of longitudinal large diactines, with occasionally tangential triactines and perpendicular small diactines.
DESCRIPTION
Heteropia in the family Heteropiidae corresponds to the same grade of skeletal complexity than Ute in the family Grantiidae.