1、 This objection was reasonable when only early theropod clavicles had been discovered,but fossilized theropod clavicles that look just like the wishbone of Archaeopteryx have now been unearthed.
这种反对是合理的，因为只有早期的兽脚亚目食肉恐龙的锁骨才被发现，但是现在已经发掘出了类似始祖鸟的叉骨的兽脚亚目食肉恐龙锁骨化石。
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