Symmetrodonts and other archaic mammals such as multituberculates and monotremes are still being debated on their taxonomical relationships. Zhangheotherium has many primitive characteristics. Among them is a spur at the foot, seen today in the modern platypus. In addition, it walked with a reptilian sprawl, like Monotremes and many Mesozoic mammals such as Jeholodens and Repenomamus.
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