This is a leaf from the fossil plant Glossopteris.

Fossils of Glossopteris leaves have been found in rocks that were formed 320 to 210 million years ago.

These plants were probably large shrubs or trees that were very common in some ecosystems, especially around 250 million years ago.

Let’s explore the distribution of Glossopteris fossils to see if we can identify any clues that tell us something about past geologic events.