Diversity and distribution patterns of Calcareous sponges (subclass Calcinea) from Martinique Author Fontana, Tayara Author Cóndor-Luján, Báslavi Author Azevedo, Fernanda Author Pérez, Thierry Author Klautau, Michelle text Zootaxa 2018 2018-04-17 4410 2 331 369 journal article 30245 10.11646/zootaxa.4410.2.5 e3ac0934-a6ef-4a3e-b3d5-606c348e73dc 1175-5326 1221622 03410832-3508-4DE7-A4CF-D0D458E0069A Leucetta Haeckel, 1872 Diagnosis. " Leucettidae with a homogeneous organization of the wall and a typical leuconoid aquiferous system. There is neither a clear distinction between the cortex and the choanoskeleton, nor the presence of a distinct layer of subcortical inhalant cavities. The atrium is frequently reduced to a system of exhalant canals that open directly into the osculum or may be a large cavity" (Valderrama et al . 2009). Type species. Leucetta primigenia Haeckel, 1872 (by original designation).