Neocomites neocomiensis Ammonite Fossil Hauterivian Cretaceous Madagascar Genuine Certified

Description

Genuine Neocomites neocomiensis Ammonite Fossil from Madagascar

This exquisite Neocomites neocomiensis ammonite fossil comes from the Hauterivian stage of the Early Cretaceous period (approximately 132–129 million years ago) and was unearthed in Madagascar, a region world-renowned for its rich fossil deposits. This specimen is an authentic relic of deep geological time, preserving the elegant form of one of the most important ammonite genera of the Early Cretaceous seas. The exact fossil you see in the photographs is the one you will receive, shown with a 1 cm scale cube for precise measurement. Each piece comes with a Certificate of Authenticity, guaranteeing it as a 100% genuine specimen.

Geological Significance – Hauterivian Stage of the Cretaceous

The Hauterivian stage is a subdivision of the Early Cretaceous, representing a key evolutionary interval in the development of marine life. During this period, vast shallow seas spread across much of the globe, including the area now known as Madagascar. These warm marine environments provided ideal conditions for ammonites to thrive and diversify. Fossils from this interval are not only striking as display specimens but also scientifically valuable, serving as biostratigraphic markers that help geologists correlate rock layers across continents.

Scientific Classification

• Class: Cephalopoda
• Subclass: Ammonoidea
• Order: Ammonitida
• Superfamily: Perisphinctoidea
• Family: Neocomitidae
• Genus: Neocomites
• Species: Neocomites neocomiensis

This species is widely recognised as a key index fossil of the Hauterivian, and its presence has been invaluable in refining the global stratigraphic framework of the Early Cretaceous.

Morphological Characteristics

The shell of Neocomites neocomiensis is notable for its compressed whorls and strong ribbing, which often bifurcate or trifurcate as they sweep across the flanks. The ribs typically end in pronounced tubercles along the ventrolateral shoulder, lending the ammonite a bold, sculptured appearance. Its moderately involute coiling and keel-like venter are diagnostic features that make it easily identifiable to both specialists and collectors. These features not only enhance the visual appeal of the fossil but also reflect adaptations that would have influenced the hydrodynamics of the animal as it moved through the marine environment.

Paleoenvironments and Ecology

During the Hauterivian, Madagascar was part of a shallow tropical sea ecosystem. Ammonites such as Neocomites neocomiensis were free-swimming nektonic predators, propelled by jet propulsion and preying upon small marine invertebrates and plankton. Their shells provided buoyancy control and protection, while their widespread distribution across the ancient seas makes them an invaluable resource for paleontologists studying Early Cretaceous biodiversity.

Collecting and Display Value

This Neocomites neocomiensis ammonite fossil from Madagascar combines scientific importance with natural beauty. Its bold ribbing and distinctive ornamentation make it a visually striking specimen, while its status as an important index fossil enhances its academic and historical value. For collectors of ammonites, students of paleontology, or those seeking a unique natural history display piece, this fossil is a superb choice.

Each fossil is carefully chosen for its quality and authenticity, ensuring that it offers both scientific interest and aesthetic appeal. This specimen embodies the timeless fascination of ammonites and represents a genuine piece of Earth’s evolutionary history preserved for millions of years.