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本帖最后由 细胞海洋 于 2014-7-7 08:33 编辑
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) s' f" R: \+ ?# q: r+ O2014年7月3日 Nature
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% Q$ k( d5 u# g$ WThe discovery of numerous feathered dinosaurs and early birds has set the iconic ‘Urvogel’ (or ‘first bird’) Archaeopteryx in a broader context. But this venerable taxon still has the capacity to surprise. A newly discovered specimen from the Solnhofen limestone in Bavaria — only the eleventh since 1861 — shows a generous covering of feathers all over the body. Of particular note is a hindlimb covering resembling feathered ‘trousers’. Analysis of feather distribution on the limbs and tail strongly suggests that pennaceous feathers — the type we are familiar with on birds today — evolved for reasons other than flight, perhaps for display. Cover photo: Helmut Tischlinger. A, r, B* i7 W4 T" `3 W6 b6 Y
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发表于 2014-7-6 07:51
看看吧，感谢分享
