Rare Neoptychites Ammonite Fossil Lower Turonian Cretaceous Menabe Madagascar Authentic Certified Fossil

Description

Rare Neoptychites Ammonite Fossil from Madagascar

This listing offers a rare Neoptychites ammonite fossil, dating from the Lower Turonian Stage of the Cretaceous period, collected in the fossil-rich region of Menabe, Madagascar. The specimen represents an excellent example of a classic Cretaceous ammonite, known for its striking ribbing and evolutionary significance during the Late Cretaceous seas. The fossil pictured is the exact specimen you will receive, with a 1 cm cube shown for accurate scale. Every fossil we sell is a 100% genuine specimen and comes with a Certificate of Authenticity, ensuring its provenance and value.

Geological Age and Context

This ammonite comes from the Lower Turonian Stage, approximately 93.9–89.8 million years ago, within the early part of the Late Cretaceous. The Turonian is well known for a global sea-level highstand, when vast shallow seas spread across many parts of the world. Madagascar, situated in the warm southern hemisphere oceans of the Cretaceous, was home to abundant ammonites and other marine life. The Menabe region is one of the world’s most important fossil localities for Turonian ammonites, with deposits yielding beautifully preserved specimens that serve as key references for both scientific study and private collections.

Taxonomy and Classification

Neoptychites is a genus of ammonites belonging to the family Vascoceratidae, within the superfamily Acanthoceratoidea, order Ammonitida. The Vascoceratidae are characterized by their robust shells and distinctive ornamentation, often with coarse ribbing and tubercles that mark the flanks and venter. These features provide easy recognition and make Neoptychites an important genus for paleontological classification and stratigraphic work. Neoptychites is widely regarded as a key genus for defining ammonite zones within the Turonian Stage, enhancing its scientific value.

Morphology and Diagnostic Features

The shell of Neoptychites is typically stout and strongly ribbed, with ribs crossing the flanks and sometimes bearing tubercles. The whorls are moderately involute, giving the fossil a solid, compact form that contrasts with the more open-coiled genera of earlier ammonites. Its distinctive ornamentation allows clear species-level identification, and these features are well preserved in this specimen. The striking ribbing and structural robustness of Neoptychites shells reflect adaptations to a dynamic marine environment, while also providing a visually impressive fossil for collectors.

Scientific and Collector Importance

Ammonites such as Neoptychites are widely used in biostratigraphy, as their well-defined evolutionary progression and relatively narrow stratigraphic ranges make them highly effective index fossils. They allow geologists to date and correlate Lower Turonian sediments across regions of Europe, Africa, and Madagascar. For collectors, Neoptychites fossils from Menabe are especially prized due to their rarity, strong aesthetic form, and global scientific importance. The combination of bold ribbing, excellent preservation, and classic Madagascan provenance makes this an outstanding fossil for display or study.

Provenance and Authenticity

This fossil was collected in Menabe, Madagascar, one of the most celebrated fossil localities in the world for Turonian ammonites. Every specimen we offer is hand-selected and guaranteed authentic. A Certificate of Authenticity is included, ensuring confidence in its provenance and scientific accuracy. All fossils are carefully packaged and securely shipped to ensure they arrive safely.

This is a rare Neoptychites ammonite fossil from the Lower Turonian of Madagascar, combining scientific importance, striking morphology, and a world-class provenance. A superb addition to any collection of ammonites, Cretaceous fossils, or natural history specimens.