3.25″ Iridescent Cleoniceras cleon Fossil Ammonite | Lower Albian Cretaceous | TULEAR Madagascar | Genuine with COA

Description

Iridescent Cleoniceras cleon Fossil Ammonite (3.25″)

Geological Age: Lower Albian, Early Cretaceous (~113 to 100.5 million years ago)

Location Found: Tulear (Toliara), Southwestern Madagascar

Fossil Type: Ammonite (Extinct Marine Cephalopod)

Species: Cleoniceras cleon

Order: Ammonitida

Superfamily: Hoplitoidea

Family: Hoplitidae

Specimen Overview:

This spectacular 3.25-inch fossil ammonite is a naturally iridescent specimen of Cleoniceras cleon, showcasing vibrant flashes of green, gold, red, and blue across its surface. Discovered in the Lower Albian marine beds of Tulear, Madagascar, this ammonite is a highly desirable combination of palaeontological importance and aesthetic beauty.

The image displays the exact fossil for sale. A 1cm scale cube is included in the photo to verify the full dimensions and proportions of the specimen.

Geological Context & Depositional Environment:

During the Lower Albian, Madagascar lay along the edge of the ancient Tethys Ocean, immersed in warm, nutrient-rich seas. These conditions led to the formation of fossil-rich calcareous sediments, particularly in the Tulear region. Here, the preservation of ammonites was exceptional, sometimes even retaining nacreous aragonite shell layers responsible for iridescence.

The beds from this area are globally important for Lower Cretaceous ammonite zonation and commonly associated with the Douvilleiceras mammillatum biozone.

Morphology & Notable Features:

Cleoniceras cleon is distinguished by its thin, discoidal shell with a slightly compressed profile and a narrow venter. The surface is generally smooth with delicate growth lines, and in rare cases like this, displays natural iridescence when the nacreous shell layer is preserved.

This specimen features exceptional multicolour iridescence under direct light—a rare and highly valued characteristic. The shell’s form and preservation make it an ideal example of the species.

Authenticity & Guarantee:

All of our fossils are 100% genuine and include a Certificate of Authenticity. This ammonite has been carefully selected and professionally prepared to preserve its iridescent beauty and ensure long-term stability.

Perfect For:

• Fossil and ammonite collectors
• Natural gemstone and iridescence enthusiasts
• Educational or museum-grade display
• Unique home décor or scientific gift

Capture the shimmer of ancient oceans with this dazzling Cleoniceras cleon ammonite—an authentic piece of Lower Cretaceous history from Madagascar’s renowned fossil beds.