PROC. U.S. NAT. MUS.. VOL. 115 



ESTRADA. MEGGERS, EVANS — PLATE 6 



'i(j;-<f«j>*«E>i'-s(»fe««,»'-v-' • • ■ ■«m*^m»n»m^ 



iimmmmtmKmmmmmmiitmmmmm 



tm.' >: 



I I — I — I 



3 CM 



Stone artifacts of the Jainbcli Phase: a, bark beater from M-7: Esteros, a site of the Bahia 

 Phase; b, bark beater fragment from G-86, Cut 1, Level 60-80 cm.; c, bark beater from 

 G-L-30, surface; d, saw or knife of sandstone from G-L-30. 



