Figure 4 in The giraffe (Giraffa camelopardalis) cervical vertebral column: a heuristic example in understanding evolutionary processes?

Figure 4. Upper panel: the percentage contribution of the remaining vertebral regions to the vertebral column length minus that of the cervical of giraffes aged from calf to adult (ages are estimates). Lower panel: the percentage contributions of the remaining vertebral regions to the vertebral column length minus that of the cervical of the extant ungulates studied, in comparison with the adult giraffes. The percentage occupied by the various spinal regions in the giraffe falls into the same ranges observed in other ungulates when the cervical vertebrae are not included. Key: l, lumbar; s, sacral; t, thoracic.