Figure 5 in Taxonomic classification of the reef coral family Lobophylliidae (Cnidaria: Anthozoa: Scleractinia)

Figure 5. Acanthastrea Milne Edwards & Haime, 1848a, generally has discrete corallites, with varying amounts of coenosteum, or may be phaceloid/flabello-meandroid, with medium to large (≥ 4 mm) and medium- to high-relief (≥ 3 mm) calices, and septa in three cycles (24–36 septa). Septal teeth with medium height (0.3–0.6 mm) and medium to wide spacing (≥ 0.3 mm), unequally shaped between first- and third-order septa, equally sized between wall and septum, and smooth interarea. Walls formed by dominant paratheca and partial septotheca, with strong costa and septum centre clusters. (A–C) Acanthastrea echinata (Dana, 1846), type species of Acanthastrea; macromorphology, Acanthastrea spinosa Milne Edwards & Haime, 1848a, holotype of Acanthastrea MNHN IK-2010-599, Tongatapu, Tonga (A; photo by A. Andouche); micromorphology (scanning electron microscopy; B) and microstructure (transverse thin section; C), syntype USNM 25, Fiji. D–F, Acanthastrea pachysepta (Chevalier, 1975); macromorphology, holotype MNHN IK-2010-660, Chesterfield, Islands, New Caledonia (D); micromorphology (E) and microstructure (F), hypotype USNM 45515, Murray Island, Australia. (G–I) Acanthastrea rotundoflora Chevalier, 1975; macromorphology, holotype MNHN IK-2010-675, south-east Fabre Atoll, New Caledonia (G); micromorphology (H) and microstructure (I), hypotype IRD HS3166, New Caledonia.