Fossil Basilosaurus Primitive Whale Tooth Eocene Priabonian Western Sahara Morocco

Description

Fossil Basilosaurus (Primitive Whale) Tooth – Upper Eocene, Priabonian, Western Sahara, Morocco

This authentic Fossil Basilosaurus tooth, sourced from the Late Eocene–Priabonian deposits of the Western Sahara, Morocco, represents one of the most important and iconic early whales of the prehistoric world. The fossil shown in the photographs is the exact specimen you will receive, with scale cubes of 1 cm included for accurate size reference. All of our Fossils are 100% Genuine Specimens and come with a Certificate of Authenticity.

Geological Age and Formation

The tooth dates to the Upper Eocene (Priabonian Stage, approx. 38–33.9 million years ago), a time when the region now known as the Western Sahara formed part of a warm, shallow marine environment bordering the ancient Tethys Sea. These seas supported an extraordinary diversity of early marine mammals, sharks, bony fish, and invertebrates.

The sediments in this region—primarily fine-grained marine sands, silts, and phosphatic layers—are well known for preserving marine vertebrate fossils of exceptional scientific significance. Conditions such as rapid burial and mineral-rich groundwater facilitated excellent fossilisation of teeth, vertebrae, and skeletal elements.

Fossil Type, Species, and Classification

Fossil Type

• Tooth from Basilosaurus, an early fully aquatic whale.

Taxonomy

• Order: Cetacea
• Suborder: Archaeoceti (ancient whales)
• Family: Basilosauridae
• Genus: Basilosaurus
• Species-level identification typically relies on associated elements; this listing follows widely used regional identification conventions for Moroccan Eocene material.

Basilosaurus is among the most famous early whales—an apex predator with a long, eel-like body and powerful jaws filled with recurved teeth adapted for tearing prey.

Morphological Features

This fossilised tooth displays classic Basilosaurus characteristics:

• Long, conical crown ideal for gripping slippery marine prey
• Distinctive longitudinal ridges along the enamel surface
• Sharp cusp and or pointed apex reflecting carnivorous feeding habits
• Thick, robust root, often partially preserved depending on collection context
• Natural mineralisation, giving the tooth a rich, fossilised patina

Unlike modern whales, Basilosaurus retained differentiated teeth (heterodont dentition), including molars and premolars with cutting crests—a defining feature of archaeocete whales.

Paleoecology and Behaviour

Basilosaurus was a formidable marine predator, reaching lengths of 15–20 metres, with a serpentine body unlike modern cetaceans. Key ecological notes include:

• Top predator of the Late Eocene seas
• Fed on fish, sharks, small whales, and large marine reptiles
• Fully aquatic, incapable of returning to land
• Possessed small but functional hind limbs—an evolutionary remnant

This evolutionary stage marks a critical transition in whale history, showcasing the shift from land-dwelling ancestors to fully oceanic mammals.

Depositional Environment

The fossil-bearing layers of Western Sahara represent:

• Warm epicontinental seas with high biological productivity
• Soft marine sediments ideal for preserving skeletal material
• Phosphatic nodules and beds rich in vertebrate remains
• Low-oxygen burial zones, reducing scavenger activity and decay

These conditions produced some of the finest Late Eocene marine vertebrate fossils in North Africa.

Scientific and Historical Significance

Basilosaurus is one of the most important taxa for understanding whale evolution. Features that highlight its significance include:

• Fully aquatic lifestyle with vestigial hind limbs
• Transitional morphology between archaeocetes and modern cetaceans
• Robust dentition useful for identifying feeding strategies
• Presence within Priabonian biozones used for regional correlation

Specimens from North Africa are crucial for reconstructing the global distribution of early whales during the Eocene.

Collector Grade and Display Appeal

This tooth has been selected for:

• Strong enamel preservation
• Excellent structural definition
• Attractive fossil patination
• Solid, stable mineral composition
• Ideal size for display or study

Its distinct morphology makes it easily recognisable as a primitive whale tooth, appealing to both serious fossil collectors and enthusiasts.

Ideal for Collectors, Enthusiasts, and Educational Displays

This genuine Fossil Basilosaurus tooth from the Upper Eocene of Western Sahara offers a rare opportunity to own a piece of early whale evolution. With its rich scientific value, striking appearance, and exceptional preservation, it is a remarkable addition to any fossil collection, museum exhibit, or natural history display.