Rare Pseudaspidoceras perinflatum Ammonite Fossil Turonian Cretaceous Betioky Madagascar Genuine Specimen

Description

Rare Pseudaspidoceras perinflatum Ammonite Fossil

This listing features a rare Pseudaspidoceras perinflatum ammonite fossil, dating from the Turonian Stage of the Cretaceous period, collected in the world-famous fossil beds of Betioky, Madagascar. This specimen represents one of the most distinctive ammonites of the Turonian, noted for its bold ribbing and sculptured form. The photographs show the exact fossil for sale, with a 1 cm cube included for accurate scale. Every specimen we supply is a 100% genuine fossil and comes complete with a Certificate of Authenticity.

Geological Age and Context

The Turonian Stage (approximately 93.9–89.8 million years ago) represents an important interval of the Late Cretaceous. This period was marked by high global sea levels, warm climates, and rich marine ecosystems. Ammonites thrived in these shallow seas, evolving into diverse and highly ornamented forms. The fossil-rich deposits of Betioky, Madagascar, are renowned worldwide for producing exceptionally preserved ammonites, making them both scientifically significant and highly desirable to collectors. Specimens like Pseudaspidoceras perinflatum provide insight into the biodiversity and paleoecology of these ancient oceans.

Taxonomy and Classification

Pseudaspidoceras perinflatum belongs to the genus Pseudaspidoceras, within the family Acanthoceratidae, superfamily Acanthoceratoidea, and order Ammonitida. The Acanthoceratidae are among the most important ammonite families of the Turonian, characterised by their ornate shells with strong ribbing and nodose ornamentation. Pseudaspidoceras is particularly significant because of its unique morphology, which makes it easily recognisable and valuable for both scientific classification and biostratigraphy.

Morphology and Diagnostic Features

The shell of Pseudaspidoceras perinflatum is robust and highly ornamented, with coarse ribs crossing the flanks and often bearing tubercles or nodes at regular intervals. The whorls are moderately inflated, giving the fossil a strikingly sculptural appearance. The venter (outer edge of the shell) is often broad, with ribs continuing across it, adding to the ammonite’s distinctive patterning. These features make Pseudaspidoceras one of the more visually dramatic ammonites of the Turonian and highlight its evolutionary adaptations to the dynamic Cretaceous seas.

Scientific and Collector Importance

Ammonites like Pseudaspidoceras perinflatum are of great importance to Turonian biostratigraphy, serving as index fossils that help geologists identify and correlate marine strata across continents. Their restricted time range and distinctive ornamentation make them ideal for refining the zonation of the Cretaceous system. For collectors, specimens from Madagascar are especially sought after due to their rarity, fine preservation, and the island’s global reputation as a source of world-class fossils. This specimen offers both scientific value and strong aesthetic appeal, making it an excellent addition to any collection.

Provenance and Authenticity

This fossil was collected from Betioky, Madagascar, a classic site for Turonian ammonites. Every specimen we offer is hand-selected and guaranteed authentic, accompanied by a Certificate of Authenticity to ensure its provenance. Secure professional packaging and shipping guarantee safe delivery, so you can purchase with complete confidence.

This is a rare Pseudaspidoceras perinflatum ammonite fossil from the Turonian of Madagascar, combining rarity, scientific importance, and striking morphology. A superb piece of natural history, it is an ideal addition for collectors of ammonites, Cretaceous fossils, or anyone passionate about paleontology.