A newly discovered fossil of an early ray-finned fish, named Saurichthys curionii, from the Middle Triassic of Switzerland reveals a previously unknown mechanism of axial skeleton elongation. This is an artist’s reconstruction of Saurichthys curionii. Image credit: University of Zurich. The extreme elongation of body axis occurred in one of two ways: through the elongation of the individual vertebrae of the vertebral column; or through the development...
