Alan Walker, of Pennsylvania Sate University, told Science: 'These things were very odd creatures.

宾夕法尼亚州立大学的艾伦•沃克说：“这些骨骼都属于很古怪奇特的生物。

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Alan Walker, of Pennsylvania Sate University, told Science: 'These things were very odd creatures.

宾夕法尼亚州立大学的艾伦•沃克说：“这些骨骼都属于很古怪奇特的生物。

youdao