Hexacorallia stony coral skeletons: Dendrophylliidae species, Pavona frondifera, Pavona divaricata, Hydnophora exesa, Pectinia lactuca, Mancinia species, Scolymia lacera, Goniastrea aspera, Faviidae species, Plerogyra laxa and Euphyllia glabrescens. Chromolithograph by Adolf Glitsch from an illustration by Ernst Haeckel from Art Forms in Nature, Kunstformen der Natur, Liepzig, Germany, 1904.
Hexacorallia stony coral skeletons: Dendrophylliidae species, Pavona frondifera, Pavona divaricata, Hydnophora exesa, Pectinia lactuca, Mancinia species, Scolymia lacera, Goniastrea aspera, Faviidae species, Plerogyra laxa and Euphyllia glabrescens. Chromolithograph by Adolf Glitsch from an illustration by Ernst Haeckel from Art Forms in Nature, Kunstformen der Natur, Liepzig, Germany, 1904.