Knowledge & Nature

Roman Coins: History, Types, and How to Recognize Originals
Roman coins are fascinating witnesses to antiquity. Learn all about types like the Denarius and Aureus, what the images mean, and how to identify originals. Read more...
Petrified Wood: When Trees Turn to Stone
Petrified wood forms when minerals replace a tree's organic material cell by cell—a process that takes millions of years. Learn how it forms and why it's so fascinating. Read more...
Mosasaurus – Ruler of the Prehistoric Oceans
The Mosasaurus was the largest marine reptile of the Cretaceous period – not a dinosaur, but a relative of today's monitor lizards. Learn all about its lifestyle, discovery, and fossil remains. Read more...
Shark Teeth as Fossils – Why They Are Preserved So Often
Sharks lose thousands of teeth in their lifetime – and that's precisely why fossilized shark teeth are so common. Learn how they form and what makes them coveted collector's items. Read more...
Fulgurite: When Lightning Strikes Sand
Fulgurites are formed when lightning strikes sand, melting it into glass. Learn how these fascinating natural wonders are created and why they are such special collector's items. Read more...
Buying Fossils: What to Look For in Authenticity and Quality
Purchasing a fossil is more than just a transaction – it's a decision to bring a piece of Earth's history into your home. But as with any collectible, there are differences in quality, fakes, and things to look out for. In this article, we explain what you should pay attention to when buying fossils so that you can make a safe and informed purchase.Real or Fake? How to Spot the DifferenceUnfortunately, there are restored, supplemented, or even completely fake fossils on the market. A few tips will help you separate... Read more...
The Most Common Ammonite Species and What They Reveal About Prehistoric Times
Ammonites are among the most well-known fossils in the world – and for good reason. Their characteristic spiral shapes have survived millions of years, and today they tell us about a world that has long since vanished. But not all ammonites are the same: there were hundreds of genera, each with its own shape, size, and history. In this article, we introduce you to the most common types and explain what they reveal about life in the Mesozoic era.Dactylioceras – The Jurassic ClassicDactylioceras is probably one of the most commonly... Read more...
What does a Certificate of Authenticity mean when buying fossils?
When you buy a fossil, you're not just acquiring an object – you're acquiring a piece of Earth's history. But how do you know if the fossil is truly authentic? And what exactly is included in a certificate of authenticity? In this article, we explain what such a document entails, why it is so important, and what you should look out for when buying.What is a Certificate of Authenticity?A certificate of authenticity is an official document issued by the dealer or seller that records the most important information about a... Read more...
Sarcosuchus: One of the largest crocodyliformes of all time
112 million years ago, a crocodile-like creature lived in Africa that struck fear into dinosaurs themselves: Sarcosuchus imperator. Up to 12 meters long and 8 tons heavy – a giant of the Cretaceous period. Read more...
Identifying Minerals: A Beginner's Guide
With a few simple methods, you can determine which mineral you have in front of you even without a laboratory. Color, streak color, hardness, luster, and crystal shape are the most important characteristics. Read more...
What is a Fossil? Formation, Types, and Locations
A fossil is the petrified remains of a once-living organism. Learn how fossils are formed, what types there are, and where the most significant discovery sites are located. Read more...
Ammonites: The Fascinating Spirals of Prehistory
For over 400 million years, ammonite fossils have lain dormant in rock layers around the globe. Learn all about their fascinating history, their significance for science, and their relation to today's nautilus. Read more...