12. It had massive legs, taloned claws, and a long, powerful neck. Its body was covered in bristling, hair-like feathers, and its beak resembled a spear.
它有着粗壮的腿、利爪及长有力的长脖子。它的躯干覆盖着毛发状的羽毛,它的喙就像一个长矛。
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13. It would be helpful if someone uncovered a Diprotodon skeleton with a spear point embedded in a rib — or perhaps Thylacoleo bones next to the charcoal of a human campfire.
14. According to What Technology Wants, a book by Kevin Kelly, one of the founders of Wired magazine, America's flintknappers produce over a million new arrow and spear heads every year.
15. The point used by Clovis people differs slightly from later points, in the way that the base of the stone is thinned—it's thinner toward the base, the part that's attached to the spear.