Rare Pseudoschloenbachia Hourcqiella bererensis Ammonite Fossil Middle Campanian Cretaceous Tsiribina Madagascar Genuine

Description

Rare Pseudoschloenbachia (Hourcqiella) bererensis Ammonite Fossil

This listing offers a rare Pseudoschloenbachia (Hourcqiella) bererensis ammonite fossil, dating from the Middle Campanian Stage of the Cretaceous period, collected in the world-renowned deposits of Tsiribina, Madagascar. This specimen represents one of the distinctive ammonites of the Campanian seas, with bold ribbing and strong ornamentation that define the genus and subgenus. The fossil pictured is the exact specimen you will receive, with a 1 cm scale cube shown for accurate measurement. Every fossil we sell is a 100% genuine specimen and comes complete with a Certificate of Authenticity.

Geological Age and Context

The Campanian Stage (approximately 83.6–72.1 million years ago) is a critical division of the Late Cretaceous. It was a period of high global sea levels, warm climates, and widespread shallow seas. Ammonites thrived during this time, diversifying into many genera and species, including Pseudoschloenbachia, which played an important role in the marine ecosystems of the age. The Middle Campanian, in particular, saw the flourishing of ammonite lineages that now serve as excellent stratigraphic markers. The Tsiribina region of Madagascar is one of the premier global localities for Campanian fossils, producing well-preserved specimens that are both scientifically important and highly collectible.

Taxonomy and Classification

Pseudoschloenbachia (Hourcqiella) bererensis belongs to the family Schloenbachiidae, superfamily Acanthoceratoidea, and order Ammonitida. The Schloenbachiidae are well known for their robust, ornamented shells, often marked by coarse ribbing and prominent tubercles. Within this family, the subgenus Hourcqiella is distinguished by particular patterns of ribbing and whorl development, making species like bererensis valuable for detailed biostratigraphic work. These fossils are not only key for stratigraphic correlation but also provide insight into the evolutionary adaptations of ammonites during the Campanian.

Morphological Features

The shell of Pseudoschloenbachia (Hourcqiella) bererensis is evolute, with earlier whorls clearly visible. Its ribs are strong and radiate prominently across the flanks, often terminating in nodes or tubercles that give the fossil a rugged, sculptural quality. The venter (outer margin of the shell) is typically broad, with ribbing continuing across it in a defined, symmetrical pattern. These features make the ammonite easily identifiable, while also providing a visually striking fossil for display. The robust ribbing and ornamentation likely played a role in shell reinforcement, a useful adaptation in the dynamic marine environments of the Cretaceous.

Scientific and Collector Importance

Ammonites such as Pseudoschloenbachia bererensis are highly significant for biostratigraphy of the Middle Campanian. Their restricted stratigraphic ranges and distinctive morphology allow geologists to precisely date and correlate marine deposits across vast regions. For collectors, this species is prized for its rarity and striking appearance, with Madagascan specimens standing out due to their excellent preservation. A fossil from Tsiribina represents not only a scientific reference piece but also a highly aesthetic specimen, making it a superb addition to any ammonite or Cretaceous fossil collection.

Provenance and Authenticity

This ammonite fossil was collected from Tsiribina, Madagascar, a globally important locality for Campanian ammonites. Every specimen we offer is carefully selected and guaranteed authentic. Each fossil comes with a Certificate of Authenticity, ensuring confidence in its scientific and collector value. Secure, professional packaging ensures that your specimen will arrive safely and ready for enjoyment or study.

This is a rare Pseudoschloenbachia (Hourcqiella) bererensis ammonite fossil from the Middle Campanian of Madagascar, a specimen that combines scientific significance, rarity, and aesthetic appeal. An exceptional piece for collectors of ammonites, Cretaceous fossils, or natural history specimens.