Figure 18 in Taxonomic classification of the reef coral family Mussidae (Cnidaria: Anthozoa: Scleractinia)

Figure 18. Mussa and Scolymia micromorphology (scanning electron microscopy): left column, wall; middle column, mid-septum; right column, columella. Both Mussa and Scolymia have high, spine-shaped teeth. Mussa is distinguished by thinner septa, and a distinctively horizontally layered interarea. The columellae of Scolymia have thick, paddle-shaped teeth, in comparison to the thinner platy teeth of Mussa. A–C, Mussa angulosa (Pallas, 1766); figured specimen = SUI102761 (FA1012), Bocas del Toro, Panama. D–F, Scolymia lacera (Pallas, 1766); figured specimen = USNM84920, Discovery Bay, Jamaica. G–I, Scolymia cubensis (Milne Edwards & Haime, 1849); figured specimens = USNM84940, Maria Buena Bay, Jamaica (G, H); SUI102777 (FA1097, SCUB16), Bocas del Toro, Panama (I). J–L, Scolymia wellsi (Laborel, 1967); figured specimen = USNM84926, Angel Reef, Tobago.