Haeckel, 1862
Diagnosis
Phaeodaria with bivalved lattice shell, with conical cupola or pyramidal galea at apical pole of both valves, therefore at opposite poles of the sagittal axis, each valve with 3 or more hollow radial tubes symmetrically disposed, sometimes with branches forming an outer bivalved mantle. The elaborate outer mantle of tube branches is usually the dominant feature of the skeleton.
Some authors have placed species possessing a frenulum and rhinocanna into the family Coelographididae Haeckel 1887, reserving the family Coelodendridae for species lacking those structures.
Genera treated:
Genus Coelechinus
Genus Coelodecas
Genus Coelodendrum
Genus Coelodiceras
Genus Coelographis