Cicatrites Ammonite Fossil Cretaceous Madagascar COA Aptian Lower Cretaceous Genuine Display Specimen

Description

Genuine Cicatrites Ammonite Fossil from Madagascar

This is a genuine Cicatrites ammonite fossil from Madagascar, dating to the Lower Cretaceous, Aptian Stage. Madagascar is one of the world’s most famous sources of Cretaceous ammonites, known for producing attractive and highly collectable cephalopod fossils with strong display appeal. This specimen represents an authentic piece of prehistoric marine life from a time when warm seas surrounded Madagascar and supported a rich diversity of ammonites, nautiloids, bivalves, gastropods, fish, and marine reptiles.

This fossil is a carefully chosen specimen, with the photograph showing the actual piece you will receive. Full sizing can be seen in the photo. The specimen also includes a Certificate of Authenticity lifetime guarantee generic card, making it a desirable fossil for collectors, educational displays, geology teaching, natural history cabinets, and anyone interested in genuine Cretaceous marine fossils.

Fossil Type and Identification

Cicatrites is an ammonite, an extinct marine cephalopod related to modern squid, cuttlefish, and nautilus. Ammonites lived inside chambered shells, with the animal occupying the final outer body chamber. The earlier chambers helped regulate buoyancy, allowing the ammonite to rise, descend, and move through the water column of the ancient sea.

Ammonites are among the most important fossil groups in geology because they evolved rapidly and were widely distributed across ancient marine environments. Their changing shell forms allow palaeontologists to date and correlate marine rock layers with great accuracy. A Cretaceous ammonite such as this is not only an attractive display fossil, but also a genuine record of the marine ecosystems that existed over 100 million years ago.

Lower Cretaceous Aptian Age

This fossil dates to the Aptian Stage of the Lower Cretaceous, approximately 125 to 113 million years ago. The Aptian was a time of warm global climates, high sea levels, and widespread shallow to moderately deep marine environments. Ammonites were especially diverse during this period, developing a wide variety of shell forms, from tightly coiled classic ammonites to more unusual and highly ornamented species.

During the Aptian, the seas around Madagascar were part of a changing Cretaceous world influenced by the breakup of Gondwana and the development of the Indian Ocean. Marine sediments accumulated along the island’s margins, preserving the shells of ammonites and other sea creatures after burial on the sea floor. Over millions of years, pressure, mineral replacement, and natural weathering transformed these remains into the fossil specimens collected today.

Madagascar Cretaceous Geological Setting

Madagascar’s Cretaceous fossil deposits are internationally recognised for their ammonite faunas. The island’s marine sediments preserve evidence of ancient tropical and subtropical seas that once bordered the landmass. These deposits include muds, silts, sands, marls, and limestones laid down in marine settings where ammonites were abundant.

The fossilisation process often gives Madagascar ammonites their distinctive natural colour, mineral texture, and attractive surface features. Depending on preservation, this specimen may show shell curvature, whorl shape, ribbing, growth lines, mineral staining, matrix attachment, or chamber detail. These features are part of the fossil’s authentic geological character and help demonstrate its long history from living cephalopod to preserved natural history specimen.

Morphology and Display Features

Cicatrites ammonites display the classic ammonite character that makes these fossils so popular with collectors. The shell is typically coiled in a spiral form, recording the growth of the animal throughout life. The shell surface may show natural ornamentation, ribbing, whorl development, and mineralised texture, all of which contribute to the fossil’s visual appeal.

The chambered shell was a key feature of ammonite biology. By adjusting gas and fluid within the internal chambers, the living ammonite could control buoyancy while moving through the Cretaceous sea. This successful adaptation helped ammonites thrive for millions of years before their extinction at the end of the Cretaceous Period.

Collectable Madagascar Ammonite with Certificate of Authenticity

This Cicatrites ammonite fossil is a genuine specimen and includes a Certificate of Authenticity lifetime guarantee generic card. The photograph shows the actual fossil supplied, making this a carefully selected individual specimen rather than a stock image.

With its Lower Cretaceous Aptian age, Madagascar origin, and classic ammonite form, this fossil is ideal for collectors of Cretaceous ammonites, Madagascar fossils, marine cephalopods, educational geology pieces, and authentic prehistoric natural history specimens.