Amphioxus against a black background

Reconstructing ancestors: insights from the ocean

Giacomo Gattoni, PhD Student, writes: When we look at the natural world we are often in awe at the richness and diversity of life forms that we can observe. As an undergraduate student, I became fascinated by evolution, the process through which this diversity originated during the history of life. I am particularly interested in reconstructing ancestors of modern animals, organisms that lived in the … Continue reading Reconstructing ancestors: insights from the ocean

A cleared and stained backbone from a hatchling skate. Red staining indicates mineralised cartilage and blue staining indicates unmineralised cartilage.

Segmentation of the backbone

Kate Criswell, Postdoctoral Research Associate, writes: One of the key features that distinguishes vertebrate animals from our invertebrate cousins (such as insects and molluscs) is a backbone, or a series of vertebrae that run the length of the body. These vertebrae can range in number from only nine in frogs to over 300 in elongate animals like snakes and eels! They are important for providing … Continue reading Segmentation of the backbone