bipedalism

双足步行或双足运动（英語：bipedalism）是动物在陆地上的一种运动方式（英语：terrestrial locomotion），动物通过移动两个后肢或后腿行进。能够进行这种运动的动物被称为双足动物，依照此原理制造的仿生机器人则会被称为双足机器人。双足运动通常包含步行、跑步和跳躍。

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Persons, W. Scott; Currie, Philip J. The functional origin of dinosaur bipedalism: Cumulative evidence from bipedally inclined reptiles and disinclined

Niemitz C. A Theory on the Evolution of the Habitual Orthograde Human Bipedalism - The "Amphibisce Generalistheorie". Anthropologischer Anzeiger. 2002

Holder R.L., and Crompton R.H. PREMOG - Supplementry Info. Origin of Human Bipedalism As an Adaptation for Locomotion on Flexible Branches. Primate Evolution