Animation Research Research expand_more Current Projects Current Projects expand_more Tracing postural shifts through synapsid evolution Evolution of the mammalian vertebral column Evolution of the mammalian vertebral column expand_more Bending mechanics of xenarthrous vertebrae Other Research Other Research expand_more Exploring digit reduction in fossil horses How the avian neck got its twist Can semicircular canal shape predict ecology? Media Media expand_more Animation Images Ichthyostega - whole body reconstruction Ichthyostega - shoulder joint range of movement Ichthyostega - hip joint range of movement 1_edaphosaurus_primitive_regions.jpg Pelycosaur - primitive number of backbone regions Therapsid - evolution of the 4th pectoral region