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Orthoceras Fossil Cone Devonian Morocco Genuine Straight Cephalopod Fossil Specimen with Certificate of Authenticity

Name: Orthoceras Fossil Cone Devonian Morocco Genuine Straight Cephalopod Fossil Specimen with Certificate of Authenticity
Brand: SilverGeo
SKU: FP9302
Availability: InStock

Original price was: £19.20.Current price is: £13.44.

Scale cube=1cm: Full sizing please see photo

All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity

Specimen: Orthoceras Cone

Age: Devonian

Location: Morocco

Orthoceras cones are fossilized remains of ancient marine creatures belonging to the cephalopod group, specifically the Orthocerida order. These fossils are particularly well-known and abundant in the geological deposits of Morocco, where they provide a captivating glimpse into the prehistoric oceans that existed hundreds of millions of years ago.

The Orthoceras was a straight-shelled cephalopod that lived during the Paleozoic Era, predominantly in the Devonian and Silurian periods, approximately 488 to 416 million years ago. These marine animals were characterized by their long, slender, conical shells, resembling a pointed cone or a tapered cylinder. The name “Orthoceras” is derived from the Greek words “ortho,” meaning straight, and “kera,” meaning horn, reflecting the distinctive shape of their shells.

Fossilized Orthoceras cones found in Morocco are typically preserved in sedimentary rocks, often in the form of limestone or shale. The exceptional preservation conditions have led to the creation of beautiful and detailed fossils that capture the intricate structure of the Orthoceras shell. These fossils are frequently encountered in the Anti-Atlas region of Morocco, where they are extracted from ancient seabed deposits.

The Orthoceras cones from Morocco are prized by collectors and paleontologists alike for their aesthetic appeal and scientific significance. The fossils showcase the spiral suture patterns on the shell, marking the divisions between individual chambers that the cephalopod inhabited during its life. The fine-grained nature of the sediment in which these fossils are embedded often allows for the preservation of delicate features, providing valuable insights into the morphology and biology of these ancient marine organisms.

In addition to their scientific value, Orthoceras cones from Morocco have become popular in the world of lapidary and fossil collecting. The fossils are often polished to reveal the intricate internal structure of the shell, creating unique and visually striking specimens. These fossils serve as both educational tools and decorative items, allowing enthusiasts to appreciate the beauty of ancient marine life while connecting with the geological history of the Earth.

ACTUAL AS SEEN: The image shows the EXACT specimen you will receive. The specimen has been carefully hand selected and photographed. Measurements are as accurate as possible, though be aware measuring precise dimensions can be difficult from irregular shaped items. Whilst we portray colours as close to life-like as we can, colours will vary if taken in sunlight, indoors, from monitor to monitor and device to device. Once this specimen is sold, we will update this listing with new similar selected item, with a new photo and dimensions.

(Actual as seen)

Only 1 left in stock

SKU: FP9302 Category: Orthoceras

Description

Genuine Orthoceras Fossil Cone – Devonian, Morocco

This authentic Orthoceras fossil cone originates from the Devonian deposits of Morocco, a region globally recognised for producing exceptional marine fossils. Carefully selected for its form and preservation, this is the exact specimen you will receive, as shown in the photographs. Each piece includes a Certificate of Authenticity with a lifetime guarantee, ensuring complete confidence in its genuine prehistoric origin.

Fossil Identification & Classification

Orthoceras is a genus of extinct marine cephalopods belonging to the subclass Nautiloidea, within the class Cephalopoda. These ancient creatures are distant relatives of modern nautiluses and represent some of the earliest advanced marine predators.

Orthoceras is characterised by its long, straight conical shell, distinguishing it from the coiled ammonites that evolved later. It belongs to the order Orthocerida, a group of straight-shelled nautiloids that thrived in ancient oceans.

Geological Age & Formation

This specimen dates to the Devonian period (approximately 419 to 359 million years ago), often referred to as the “Age of Fishes.” During this time, vast shallow seas covered much of North Africa, creating ideal conditions for marine life to flourish.

The fossil formed within marine sedimentary limestone, where the remains of Orthoceras settled on the seabed after death and were gradually buried by fine sediments. Over millions of years, mineralisation preserved the shell structure, often enhancing contrast between the fossil and surrounding rock.

Morphology & Structural Features

This Orthoceras fossil displays the classic features that make these specimens so distinctive:

A long, tapered conical shell (orthocone)
Clearly visible internal chamber divisions (septa)
A central or slightly off-centre siphuncle, used for buoyancy control
Smooth outer shell with subtle natural patterning

The segmented internal chambers are a key feature, originally filled with gas or liquid to help the animal regulate its position in the water column.

Lifestyle & Ecological Role

Orthoceras was an active marine predator, using its streamlined shell and jet propulsion to move through the water. It likely fed on smaller marine organisms, contributing to the complex food webs of Devonian seas.

Its ability to control buoyancy through its chambered shell made it a highly efficient swimmer, allowing it to occupy different levels of the marine environment.

Moroccan Deposits & Preservation Quality

Morocco is one of the most important global sources of Orthoceras fossils, particularly from Devonian limestone formations. These deposits often preserve fossils in dense black limestone with contrasting lighter fossil material, creating a visually striking appearance.

This specimen has been carefully chosen for its clear structural detail and natural aesthetic, making it suitable for both display and study.

100% genuine Orthoceras fossil
Includes Certificate of Authenticity (lifetime guarantee)
Exact specimen shown in photographs
Full sizing available in images for accurate scale

A Classic Fossil for Collectors

Orthoceras fossils are highly sought after for their distinctive shape and strong visual contrast within the host rock. Their straight, elegant form and visible internal structure make them a standout addition to any fossil or natural history collection.

This Devonian Orthoceras cone from Morocco offers a remarkable glimpse into ancient marine life, combining geological significance with timeless display appeal.

Additional information

Era	Devonian
Origin	Morocco

Devonian Information

The Devonian Period (419–359 million years ago), known as the "Age of Fishes," was a time of major evolutionary advances in both marine and terrestrial life. The oceans were dominated by armored placoderm fish, early sharks, and lobe-finned fish like Tiktaalik, which had features that helped vertebrates transition to land. Coral reefs flourished, and ammonites became more diverse. On land, the first forests appeared, with early trees like Archaeopteris, leading to a drop in atmospheric carbon dioxide and climate cooling. The first tetrapods (four-legged vertebrates) began evolving from fish, marking a critical step in the evolution of amphibians. The period ended with the Devonian extinction, likely caused by ocean anoxia and climate shifts, wiping out many marine species and reshaping ecosystems.

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