化石の
1,388
10,552
12,297 11,504
6,910
4,928
7,400 6,439
5,276 4,541
7,729 6,043
5,927 5,774
4,599
7,151
9,252
01,0002,0003,0004,0005,0006,0007,0008,0009,000
10,00011,00012,00013,00014,000
13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29
( )
( )
13 11 27 28 1 3
4