迄今已知大约70种爬行动物有单性繁殖行为。
Parthenogenesis is so far known to occur in about 70 reptile species.
尾羽龙有一种有趣的爬行动物和鸟类的混合解剖特征。
Caudipteryx has an interesting mix of reptile and bird-like anatomical features.
这种食肉动物已被确认为一种上龙，上龙是一类已经灭绝了的水生爬行动物，有巨大的头骨，粗短的脖子，还有令它们在水里来去自如的四只脚蹼。
The predator has been identified as a new species of pliosaur, a group of extinct aquatic reptiles that had huge skulls, short necks and four flippers to power them through the water.
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