本帖最后由 细胞海洋 于 2014-7-7 08:33 编辑 9 ?4 o# e* i" x; \4 Q7 k: h3 V6 H* ~/ Z$ J# t7 X: M
2014年7月3日 Nature $ y: ~- D" B' b " _& G j5 O% T& j" {The 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.& q1 @& C& }4 _2 v6 B 作者: luckymiaoji 时间: 2014-7-6 12:30
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