卡玛拉龙的腿挺粗，每只脚有五个脚趾，中趾长着锋利的爪子。
It had thick legs with five toes on each foot. The middle toe on each foot had a sharp claw.
现在，一份对鸡胚胎的研究，鸟类的翅膀的趾中确实有类似于人类拇指、食指和中指的趾的分化。
Now, a study of chick embryos shows that birds do indeed have thumb, index, and middle "fingers" in their wings.
动物园中还有两只来自马来半岛的合趾长臂猿。
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