Imagine, you are a farmer living in the central west of NSW in the 1940s. Recently, you were clearing some rock from your property to create a new field, when you discovered something amazing - beautiful shapes in the rock. They looked like feathers, but when you showed them to the Australian museum, they told you that the shapes were actually of leaves. Most amazing of all though, these leaves are hundreds of thousands of years old! You never imagined something so amazing, or so old could be found on your humble little farm!

When I showed the children these large pieces of fossil containing rock the children were amazed. They had seen fossils like this in museums, but never been allowed to touch them! Many of the children thought the fossils were of feathers, not leavess. The veins and lines running through them seemed to show feathers, and they had not seen leaves with such fine markings. Together we then explored the playground, looking for leaves which had similar structures to feathers and the children were amazed to realise just how similar leaves and feathers can be. We even found a 'skeleton leaf' so they could see the structure clearly - and it was remarkably similar to the fossilised leaves!

These fossils, which were found in the Central West of NSW, are of glossopteris leaves, and date to the Permian age. The Permian age is a period about 290 to 248 Million Years ago, well before the jurassic age and the dinosaurs which the children tend to think of when they think back to prehistory. In fact, the dinosaurs we think of, like Brachiosaurus and Stegosaurus wouldn't exist for another 40 million or so years after these leaves fell from the trees and became fossils and Tyrannosaurus rex came even later still! Leaf fossils may not be as glamorous as fossilised animals, or of course as dinosaurs themselves, but Glossopteris fossils are none the less very important, especially to the theory of Gondwana Land.
Gondwana land is a massive, supercontinent which was once a huge landmass in the oceans of earth. It was made up of a number of different countries and continents which still exist today, but instead of being separate land masses, all of these countries and continents were joined together, as one huge piece of land. India, South America, Southern Africa, New Zealand, Australia and Antarctica were all joined together as part of this amazing supercontinent, Gondwana. Yet how do we know this? A very important part of the evidence for Gondwana Land is actually the glossopteris fossils themselves. You see, Glossopteris leaf fossils can be found in India, South America, Africa, Australia, New Zealand and even in Antarctica, which means that once, glossopteris trees grew in all of these places. It was this face which made Austrian Geologist Eduard Suess believe that there might once have been a huge supercontinent made up of all these countries and places - after all, if they have the same fossil record, they must have once been joined. Since then, many other fossils have been discovered which show that the continents were joined.