Plesiosaur Ribs and Spinous Processes

3D Model

Spinous processes and ribs alternate from tail to neck in ascending order of size. The smallest spinous process goes in the furthest slot on the tail, and the next largest spinous process goes in the slot on the neck closest to the skull. The largest rib (#27) goes in the last slot on the front half of the ribs. The second largest rib (#26) goes in the first slot of the rear spine half.