Like layers of enamel in teeth, otoliths grow in tiny rings, adding a new one each season.

就像牙齿的层层釉质，耳石会呈小小的环圈生长，每一新的一圈。

The outermost ring suggests when a fish was caught. The otoliths found in Gobero's middens indicate the fish were caught throughout the year.

最外侧的一圈表示一到捕捉的时间。在格伯托的贝冢找到的耳石，显示这里全年都在捕。

Sereno has found other evidence that implies people lived year-round at Gobero. His teams have collected otoliths, the bony structures from the inner ears of fish.

塞雷诺还发现了别的证据，显示有人常年住在格伯托。他的团队收集到耳石，这是类内耳的骨质构造。