Meet Bavariscyllium: This 25-centimetre shark that lived 150 million years ago forced scientists to re-think shark evolution

Endoskeleton of †Bavariscyllium tischlingeri from the Late Jurassic Period. (Image: Communications Biology)

• 150-million-year-old shark fossil in Germany defies classification.
• Bavariscyllium fossil reveals unique features and sensory organs.
• Study suggests shark evolution is more complex than once believed.

Did our AI summary help?

Sharks have been surviving on Earth for hundreds of millions of years. One of the best examples is the Greenland shark, known for its extraordinary lifespan.  Around 150 million years ago, during the late Jurassic period, a small shark swam through ancient seas that once covered parts of Europe.

Today, its fossilised remains are forcing scientists to rethink how sharks evolved. The species, known as Bavariscyllium, measured only about 25 centimetres in length. But despite its modest size, it carries a scientific impact far larger than its body.

Bavariscyllium: The Fossil That Defies Classification

At first glance, Bavariscyllium looks like just another small prehistoric shark. It measured only about 25 centimetres long. This shark used to swim through Jurassic seas around 150 million years ago. But a closer look revealed something puzzling.

Scientists while studying the fossil, found its teeth resemble those of one modern shark group. Its body structure resembles another. It even carried a whisker-like sensory organ near its throat. This is a feature rarely seen in sharks of prehistoric era.

Who Is Behind the Study?

The fossil was re-examined by researchers from the Natural History Museum Vienna and the University of Vienna. Their findings were published in the scientific journal Communications Biology.

The team gave a detailed study on why this shark challenges traditional classification method. The research suggests that Bavariscyllium may not fit into any of the known shark categories we recognize today.

What Is the Origin of This Prehistoric Shark?

"Bavariscyllium" lived during the late Jurassic period, when warm shallow seas covered large parts of Europe. Its fossil was discovered in limestone deposits in what is now southern Germany. This region is famous for preserving delicate marine fossils.

Back then, dinosaurs roamed the land, while ancient marine reptiles and early sharks dominated the oceans. This tiny shark was part of that prehistoric ecosystem.

How Did Scientists Study the Fossil?

Researchers used detailed anatomical comparisons and high-resolution imaging to examine its skeleton, jaws and sensory structures. By analysing the full body rather than just isolated teeth, they could reassess its evolutionary position.

This is important because most fossil sharks are classified based on teeth alone, which can be misleading sometimes. The complete skeleton allowed scientists to spot unusual combinations that had gone unnoticed before.

Does This Change Anything About Sharks of Today?

Modern sharks are divided into major groups such as carpet sharks and ground sharks. For decades, scientists believed these groups followed a relatively clear evolutionary path. But Bavariscyllium suggests the story was not so simple.

Early sharks may have experimented with body designs and sensory adaptations in ways science did not understand. This means some branches of the shark family tree could be more complex.

So, Sharks Existed Before Humans!

Sharks first appeared more than 400 million years ago, long before dinosaurs and humans. The discovery of Bavariscyllium is another reminder that sharks are among the most enduring survivors in Earth’s history. This study shows that evolution is real and sharks were already mastering the oceans.