Azooxanthellate Scleractinia (Cnidaria, Anthozoa) from South Africa Author Filander, Zoleka N. https://orcid.org/0000-0002-6905-4440 Biodiversity and Coastal Research, Oceans and Coasts, Department of Environment, Forestry, and Fisheries, Cape Town, South Africa & Zoology Department, Nelson Mandela University, Port Elizabeth, South Africa zfilander@gmail.com Author Kitahara, Marcelo V. Universidade Federal de Sao Paulo, Departamento de Ciencias do Mar, Santos, Brazil & Centro de Biologia Marinha, Universidade de Sao Paulo, Sao Sebastiao, Brazil Author Cairns, Stephen D. Department of Invertebrate Zoology, Smithsonian Institution, Washington DC, USA Author Sink, Kerry J. South African National Biodiversity Institute, Cape Town, South Africa & Institute for Coastal and Marine Research, Nelson Mandela University, Port Elizabeth, South Africa Author Lombard, Amanda T. Institute for Coastal and Marine Research, Nelson Mandela University, Port Elizabeth, South Africa text ZooKeys 2021 2021-10-28 1066 1 198 http://dx.doi.org/10.3897/zookeys.1066.69697 journal article http://dx.doi.org/10.3897/zookeys.1066.69697 1313-2970-1066-1 133CE040A5AF44F1BC9A558C2F06A8AA BD84F4C3157550C9B64120B2BE53F01A Rhombopsammia Owens, 1986 Diagnosis. Corallum solitary, discoidal, and free. Synapticulothecate. Broad marginal shelf present. Costae ridged, thin and dentate. Intercostal spaces broader than costae and penetrated by large pores. Septa imperforate, with complex dentitions. Septa alternate in position with costae. Septa arranged in typical micrabaciid pattern, having multiple bifurcations of S3; number of septa a function of calicular diameter, varying between 99 and 144 in adult stage. Columella spongy. Type species. Rhombopsammia squiresi Owens, 1986a, by original designation.