Rare Lobolytoceras siemansi Fossil Ammonite Toarcian Jurassic Bakrit Morocco Genuine

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Rare Lobolytoceras siemansi Fossil Ammonite Toarcian Jurassic Bakrit Morocco Genuine

Rare Lobolytoceras siemansi Fossil Ammonite Toarcian Jurassic Bakrit Morocco Genuine Specimen with Certificate of Authenticity

Long Description

Authentic Lobolytoceras siemansi Fossil Ammonite from Morocco

This listing presents a rare Lobolytoceras siemansi fossil ammonite, an exceptionally well-preserved specimen from the Toarcian Stage of the Early Jurassic Period, approximately 182–174 million years old. Sourced from the renowned fossil beds of Bakrit, Morocco, this ammonite is a fine representation of Jurassic marine life and an important species within the ammonite record. The exact fossil pictured is the one you will receive, with a 1 cm scale cube provided in the photographs for accurate size reference. Every specimen we sell is 100% genuine and accompanied by a Certificate of Authenticity for full assurance.

Geological Context

The Toarcian Stage is part of the Early Jurassic and represents a time of significant global change, including the well-documented Toarcian Oceanic Anoxic Event, which reshaped marine ecosystems. The Bakrit region in Morocco is world-famous for its Toarcian fossil deposits, yielding a rich diversity of ammonites that are of immense value to both collectors and paleontologists.

These ammonites lived in shallow epicontinental seas connected to the ancient Tethys Ocean, where fine sediments and fluctuating environmental conditions allowed their shells to be preserved in remarkable detail. The ammonites from this region, including Lobolytoceras siemansi, are critical for biostratigraphic dating and for reconstructing the paleoenvironment of the Early Jurassic.

Scientific Classification

• Genus: Lobolytoceras
• Species: Lobolytoceras siemansi
• Family: Lytoceratidae
• Superfamily: Lytoceratoidea
• Order: Ammonitida
• Class: Cephalopoda
• Age: Toarcian, Early Jurassic (~182–174 million years ago)
• Locality: Bakrit, Morocco

Morphological Characteristics

Lobolytoceras siemansi is part of the Lytoceratidae family, known for their distinctive ornamented, evolute shells. This specimen shows the classic features of the genus, with its whorls prominently displayed rather than tightly overlapping, allowing the growth pattern of the shell to be easily visible. The ribbing, lobes, and sutures present on the shell are particularly characteristic, with complex suture patterns that highlight the intricate design of these ancient cephalopods.

The hydrodynamic shape of Lobolytoceras indicates it was an active nektonic predator, capable of swift movement through the Jurassic seas. Its chambered shell acted as a buoyancy device, enabling precise control of depth in the water column.

Paleoecological Importance

The seas of the Jurassic in what is now Morocco were teeming with life. Ammonites like Lobolytoceras siemansi shared their environment with belemnites, marine reptiles, crustaceans, and a variety of bivalves and gastropods. As active predators, ammonites played a key role in the marine food chain. The fossil record of Lobolytoceras is especially significant because it provides detailed evidence of cephalopod adaptation during the Toarcian, a period marked by ecological stress and recovery.

The preservation of Lobolytoceras ammonites in Bakrit is remarkable, allowing collectors and researchers to study fine details of shell morphology, which in turn helps refine the biozonation of the Toarcian Stage. Fossils like this are essential tools in correlating Jurassic strata globally.

Collectability and Display

This rare Lobolytoceras siemansi fossil ammonite is both a scientifically valuable specimen and an attractive collector’s piece. Its elegant shell form, rich history, and rarity make it an exceptional addition to any fossil or natural history collection.

• Specimen: Lobolytoceras siemansi fossil ammonite
• Geological Age: Toarcian Stage, Early Jurassic (~182–174 million years old)
• Location: Bakrit, Morocco
• Scale Reference: 1 cm cube visible in photographs
• Authenticity: Supplied with Certificate of Authenticity
• Condition: The fossil shown in the images is the exact specimen for sale

Owning this specimen offers not only the opportunity to possess a beautiful piece of natural history but also a tangible connection to the Jurassic seas that existed nearly 180 million years ago.