Fossil skeletons have long fascinated researchers as a window to prehistory. But so far, little is known about details of sexual development in extinct creatures. An international team of researchers from China, Germany and Japan, with significant participation from the University of Bonn, reports on the puberty of Keichousaurus in the journal Current Biology. This is a small marine viviparous reptile that lived about 240 million years ago in what is now China.
