Canavaria cf rosenbergi Fucini Fossil from Upper Pliensbachian Jurassic High Atlas Morocco Authentic

Description

Geological Context

This rare Canavaria cf. rosenbergi Fucini fossil comes from the Upper Pliensbachian Stage of the Early Jurassic, dating back approximately 185 to 182 million years ago. It was discovered in the High Atlas region of Morocco, a geological province renowned for its fossil-rich strata that span vast periods of Earth’s history. During the Pliensbachian, this area was submerged beneath the shallow waters of the ancient Tethys Ocean, creating ideal conditions for the preservation of marine fauna such as ammonites, bivalves, brachiopods, and early marine reptiles.

Taxonomic Classification

• Kingdom: Animalia
• Phylum: Mollusca
• Class: Cephalopoda (if ammonoid lineage) / Mollusca group (pending precise taxonomic placement)
• Order: Ammonitida
• Superfamily: Hildoceratoidea
• Genus: Canavaria
• Species: cf. rosenbergi (Fucini)

This species is a distinctive Jurassic ammonite, providing key insight into ammonite diversification during the Pliensbachian. Fossils like this are used as biostratigraphic markers, helping geologists to date and correlate sedimentary deposits across different regions.

Morphological Features

The Canavaria cf. rosenbergi Fucini fossil is characterised by:

• Coiled planispiral shell with well-defined growth lines and ribs.
• Strong ribbing across the flanks, which may bifurcate or curve slightly toward the venter.
• A robust shell with gently rounded whorls and a moderately compressed profile.
• Complex suture patterns on the fossil surface, reflecting the internal chamber divisions typical of ammonites.

These diagnostic features highlight the evolutionary refinement of shell structure during the Jurassic, which allowed ammonites to thrive as agile nektonic predators in ancient seas.

Depositional Environment

The High Atlas was part of the northern margin of Gondwana during the Early Jurassic. The depositional setting was a warm, shallow marine basin, influenced by periodic changes in sea level and sediment supply. The fossil-bearing strata consist primarily of limestones and marls, representing low-energy marine conditions that promoted exceptional fossil preservation. Fine-grained sediments buried the ammonites quickly after death, preventing shell destruction and enabling the retention of fine morphological detail.

Scientific and Collector Significance

• Palaeontological Value – Canavaria cf. rosenbergi Fucini is significant for understanding ammonite evolution and serves as a useful stratigraphic indicator in Jurassic geology.
• Educational Importance – A superb example of ammonite anatomy, Jurassic marine life, and fossilisation processes, ideal for teaching or display.
• Collector’s Appeal – Its strong ribbing, aesthetic shell form, and rarity from Moroccan deposits make it a prized addition to private or museum collections.
• Geological Correlation – Valuable in studying the global Pliensbachian ammonite faunas and the palaeoenvironments of the Tethys Ocean.

Authenticity and Presentation

• 100% genuine fossil specimen, guaranteed and supplied with a Certificate of Authenticity.
• The exact specimen shown in the photographs is the one you will receive, ensuring uniqueness.
• A 1 cm scale cube is included in the photos for precise size reference.

This exceptional Canavaria cf. rosenbergi Fucini ammonite fossil from the Upper Pliensbachian of the Jurassic, High Atlas, Morocco, is both scientifically valuable and visually striking. It represents a piece of Earth’s deep history, preserved for millions of years, and is a rare opportunity for collectors and enthusiasts to own a genuine specimen from one of the most significant periods of ammonite evolution.