The shape of a foraminifer

The shape of a foraminifer

In the earth sciences, we often need to look at fossils in order to be able to say something about how environments and climate on earth have varied through space and time. Sometimes these fossil are very big, like the skeleton of a Tyrannosaurus rex, or very small, like the shells of planktonic organisms such as foraminifera. Don’t let size deceive you though … we can extract much more information from a tiny shell than we can from a big skeleton.