===================+=========+=========+========= |_Mustela_|_Mustela_|_Mustela_ |_erminea_| _rixosa_|_frenata_ -------------------+---------+---------+--------- Number of cervical | (75) | (12) | (65) vertebrae | 7 | 7 | 7 -------------------+---------+---------+--------- Number of thoracic | (71) | (12) | (54) vertebrae | 14 | 14 | 14 +---------+---------+--------- | (4) | | (13) | 15 | | 15 -------------------+---------+---------+--------- The dorsal vertebra| (18) | (12) | (40) constituting the | 11th | 11th | 11th anticlinal +---------+---------+--------- | (7) | | (27) | 12th | | 12th -------------------+---------+---------+--------- Number of lumbar | (2) | | (11) vertebrae | 5 | | 5 +---------+---------+--------- | (73) | (12) | (54) | 6 | 6 | 6 -------------------+---------+---------+--------- Number of sacral | (9) | | (3) vertebrae | 2 | | 2 +---------+---------+--------- | (65) | (10) | (67) | 3 | 3 | 3 +---------+---------+--------- | (1) | (2) | | 4 | 4 | -------------------+---------+---------+--------- Number of | (73) | (12) | (57) pseudosacral | 0 | 0 | 0 vertebrae +---------+---------+--------- | (2) | | (6) | 1 | | 1 -------------------+---------+---------+--------- | | (1) | | | 11 | +---------+---------+--------- | | (3) | | | 14 | +---------+---------+--------- | (2) | (7) | | 15 | 15 | +---------+---------+--------- | (3) | (1) | | 16 | 16 | +---------+---------+--------- | (9) | | | 17 | | +---------+---------+--------- Number of caudal | (28) | | vertebrae | 18 | | +---------+---------+--------- | (11) | | (6) | 19 | | 19 +---------+---------+---------