Rare Fossil Bivalve Lopha colubrina from Cretaceous Tamataue Madagascar with COA

Description

Genuine Fossil Bivalve – Lopha colubrina

This listing offers a rare fossil bivalve, Lopha colubrina, from the Cretaceous period of Tamataue, Madagascar. The specimen has been carefully chosen for its scientific value and natural beauty, making it a perfect addition for collectors, researchers, or enthusiasts of Earth’s deep past. Every fossil we provide is 100% genuine and comes with a Certificate of Authenticity, ensuring complete peace of mind. The photographs show the exact fossil you will receive, with a 1 cm scale cube provided for accurate sizing.

Geological Setting

The fossil originates from the Cretaceous deposits of Tamataue, Madagascar, an area renowned for producing exceptionally preserved marine fossils. During the Cretaceous, this region was covered by shallow, warm seas teeming with life. The sediments in which this bivalve was fossilised consist largely of limestone and marl, deposited in a stable shallow-marine environment where invertebrates thrived.

These sediments captured and preserved the shells of molluscs, echinoderms, and ammonites, providing a detailed record of marine ecosystems during the Mesozoic era. Fossils such as Lopha colubrina are crucial for understanding the biodiversity and ecological structures of these ancient seas.

Taxonomy and Classification

• Kingdom: Animalia
• Phylum: Mollusca
• Class: Bivalvia
• Order: Ostreida
• Family: Ostreidae
• Genus: Lopha
• Species: Lopha colubrina

The genus Lopha belongs to the oyster family, Ostreidae. These sessile bivalves attached themselves to hard substrates in shallow seas, where they lived in clusters or banks. Their fossils are an important component of Cretaceous marine faunas, helping palaeontologists reconstruct ancient seafloor environments.

Morphological Features

The Lopha colubrina bivalve is notable for its strongly ribbed and coarsely ornamented shell, which often shows a curved or twisted form. This ribbing provided strength against wave action and predation, while also helping the organism anchor securely to substrates such as rocks or other shells.

The asymmetrical shape and thickened shell are typical of the oyster lineage, which evolved to survive in high-energy marine environments. Many specimens also exhibit growth lines that reflect seasonal variations in environmental conditions, offering valuable insights into the life history of the organism.

Scientific and Collector Value

Fossils of Lopha colubrina are significant both as biostratigraphic indicators and as windows into the ecology of Cretaceous seas. Their widespread distribution and well-preserved shells allow geologists to correlate rock layers across different regions.

For collectors, this fossil represents a striking and authentic piece of natural history. Its ribbed and distinctive form makes it visually appealing, while its provenance from Madagascar – a region famed for its fossil diversity – enhances its desirability.

Provenance and Authenticity

This fossil was collected from Tamataue, Madagascar, a location known for exceptional fossil preservation. It has been cleaned and prepared with care to reveal the natural detail of the shell without artificial enhancements. Each specimen comes with a Certificate of Authenticity, confirming its geological age, locality, and identity as Lopha colubrina.

This rare fossil bivalve, Lopha colubrina, from the Cretaceous deposits of Tamataue, Madagascar, is both a scientifically important specimen and an attractive addition to any fossil collection. Its distinctive ribbed morphology, authentic provenance, and guaranteed authenticity make it a truly special piece of Earth’s history.