Modular: Primitive colony. Skeleton formed by several cups resulted of subdivisions.
Interparietal budding: Type of asexual reproduction, bud in intervallum.
Intervallum: Space enclosed between the walls.
External budding: Type of asexual reproduction, bud on outer wall of parent cup.
Outer wall: External part of the skeleton, composed by a porous carcass, simple or coated by an additional sheath.
Longitudinal subdivisions: Type of asexual reproduction, bud in intervallum generated by complete longitudinal subdivision.
Intervallum: Space enclosed between the walls.
Massive pseudocolony: Modular organization in which no individual cup can be seen and generated by contiguous addition of new aquiferous units.
Catenulate: Chainlike modular organization consisting of individuals united laterally generated by incomplete longitudinal subdivision.