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Septal ornamentation often refletcs the microstucture of the septum. It can be observed in specimens without special preparation simply by observing them carefully. Upper margin, inner margin, external margin and lateral faces are important details to take into account. Today I'm going to show you some examples of septal lateral faces ornamentation. As always, I hope that it are to the liking and interest of that select group that I have called "coral lovers". Let's start with smooth lateral septal face in an indeterminate solitary coral from de middle Eocene (Bartonian) of South Pyrenean basin. Image of the lateral septum in a broken specimen. Natural transverse section of another specimen We continue with grannulae lateral septal face in Funginellastraea from middle Eocene (Bartonian) of South Pyrenean basin. A well-preserved specimen showing the granules. Detail of the lateral of the septum in another specimen. And finally pennulae lateral septal face in Synastraeidae indet. from middle Eocene (Lutetian) of South Pyrenean basin. Lateral septal face showing pennulae. Upper margin from the same specimen. And longitudinal natural section from other specimen of Leptophyllon barocum Eliasova, 1974, Synastraeidae, middle Eocene (Lutetian) south Pyrenean basin showing tipical section of pennulae.