Cleoniceras Sutured Ammonite conserved enabling a wonderful opportunity to discover the finest type ammonites of Madagascar. One of the best locations to gain colourful ammonites with wonderful natural preservation with fine minerals and this example is no exception to that end. The Cleoniceras ammonites from Madagascar and in particular from this location and deposition have a unique quality and are exceedingly desirable. In these images the keel and siphuncle clearly distinguishable, the keel of the ammonite is the last outer whorl circumference or rim, the keel here is a light caramel coloured calcite, set against this the dark siphuncle tube appears as being segmented in darker browns.
Towards the last living chamber, the distal end of the whorl of the phragmacone or shell, the soft muted tones contrast as a backdrop to the exceptional suture patterning. The suture patterning is liken to frilly fern leaf decoration, which are profuse in this particular fossil phragmacone. These sutures denote the inner chamber walls of the mollusc, the sutures spread out in filly patterning above or at the point of contact of the internal septa or chamber wall, to the inner phragmacone umbilicus.