These are the well- known flints of the Upper Chalk. We notice how they occur here in more or less parallel lines, following the stratification of the chalk. Also that they are some three or four ...
Heyward Walter Seton-Karr, born in 1859 was an explorer and notable collector of flints. We have seven flints in the museum collection which were discovered by Mr H.W. Seton-Karr in Somaliland in ...
来自MSN3 个月
Ancient maize genomes reveal the early evolutionary history of commercially important flint ...A genetic link between Northern Flints and 1,000-year-old Ozark maize By reconstructing the genomes of archaeological maize cobs and kernels, the study reveals that 1,000-year-old maize from ...
当前正在显示可能无法访问的结果。
隐藏无法访问的结果