Figure 6: Photograph showing skeleton of fetus with reduced ossification of skull bones—nasal (N), frontal (F), parietal (P), intraparietal (Ip) and supraoccipital (So), vertebral centra (Vc) in thoracic (Vct), lumbar (Vcl) and sacral (Vcs) regions, and pelvic elements (Pe). Note the complete absence of carpals (C), metacarpals (Mc), tarsals (T), metatarsals (Mt), phalanges (Ph), and caudal vertebrae (Cv) at the dose of 92.25 mg Ni/kg b.wt. as NiCl2·6H2O.