End Chambered Ammonite Majunga Madagascar

Description

Artistry & Craftsmanship

This End-Chambered Ammonite from Majunga, Madagascar is a premium specimen, graded “A+,” that reveals the internal chambers at one end. Cut and lightly polished to highlight the suture patterns and internal architecture, this fossil is both a scientific marvel and a striking display piece.

Geology & Formation

Ammonites are extinct marine mollusks in the class Cephalopoda. Over millions of years, as these creatures lived and died in ancient seas, their coiled shells were buried in sediment. Mineral deposits gradually replaced parts of the shell or filled chambers, preserving internal structures. This specimen, with its end chamber exposed, allows you to see the chambered structure that helped ammonites regulate buoyancy. The Majunga (Mahajanga) region in Madagascar is known for ammonites primarily from the Cretaceous Period (especially the Albian Stage, ~100-110 million years ago).

Interesting Facts

• “End-chambered” means one end of the ammonite has been cut to expose the internal chambers and sutures—rare and desirable for collectors and geology enthusiasts.

• Majunga ammonites are often composed of calcite, enclosed in glauconitic sandstone; coloration tends to range from yellow, brown, to darker tones depending on mineral content.

• These fossils offer windows into prehistoric marine ecosystems, and their chambered shells allowed ammonites to control buoyancy by regulating the gas and fluids in their shell chambers.

Metaphysical Qualities

• Ammonites are often valued symbolically for growth, evolution, and cyclical change, given their spiral structure and marine origins.

• Many see them as anchors of ancient energy and transformation—reminders of deep time and continuity across eras.

• Displaying such a fossil can evoke a sense of connection with the natural world, water’s flow, and historical wonder.

Dimensions & Display

• Size: 4.25 inches long, 3.75 inches wide, 4.25 inches high.

• Grade: A+

• Provenance: Majunga (Mahajanga), Madagascar.
  Ideal for display on stands or in cabinets; the exposed chamber side should face forward to showcase internal structure. Light from the side or above enhances suture detail.

Summary

The End-Chambered Ammonite from Majunga is an exceptional fossil specimen. Perfect for collectors, educators, and anyone inspired by Earth’s oceanic past—this 4.25-inch grade A+ piece offers both visual beauty and geological insight.