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，耳石会呈小小的环生长，每季加上新的。

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

最外侧的示只鱼遭到捕捉的时间。在格伯托的贝冢找到的耳石，显示这里全年都在捕鱼。

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，这是鱼类内耳的骨质构造。