The australopithecines possessed these traits and must have been adapted to arboreal quadrupedal vertical climbing, having the capacity, at the same time, to perform facultative terrestrial bipedalism, moving on the ground in a manner visually identical to that of humans. Definition The word is derived from the Latin words bi(s) 'two' and ped-'foot', as contrasted with quadruped 'four feet'. Facultative reinsurance is purchased by a primary insurer to cover a single risk—or a block of risks—held in the primary insurer's book of business. Animals that assume bipedalism on a temporary basis in order to function: Term. CHAPTER 8 Facultative bipedalism: only going on 2 feet when you need to Orthograde [trunk]: indicates upright posture Dating methods: Relative – older or younger:-Stratigraphic: analyze order and position of layers of remains and put in geological time scale-Biostratigraphi/faunal correlationc: fossils and their use in dating rock formations. Bipedalism - Definition - Facultative and Obligate Bipedalism. Zoologists often label behaviors, including bipedalism, as "facultative" (i.e. Bipedalism definition is - the condition of having two feet or of using only two feet for locomotion. discussed, facultative bipedalism is a likely intermediate. Obligate: Obligate means to be restricted to a particular characteristic. The position of the BCoM varies depending on the length of the trunk and tail relative to the hip ( Van Wassenbergh and Aerts, 2013 ). ... Facultative Bipedalism: Definition. optional) or "obligate" (the animal has no reasonable alternative). Advantages. Limited and exclusive bipedalism can offer a species several advantages. Is the discipline of defining groups of biological organisms on the basis of shared characteristics. Types of Cellular Respiration. Facultative: Facultative organisms obtain energy from aerobic respiration, anaerobic respiration, and fermentation. 2 legs, but only a few animals practice bipedalism as their usual means of locomotion. The word is derived from the Latin words bi(s) 'two (2)' and ped-'foot', as contrasted with quadruped 'four feet'.. Facultative and obligate bipedalism. Zoologists often label behaviors, including bipedalism, as "facultative" (i.e. Obligate Bipedalism: Definition. Facultative and Obligate Bipedalism. optional) or "obligate" (the animal has no reasonable alternative). Definition. The parasite is an organism which lives on or within another living organism … Definition. Definition. Facultative bipedalism has evolved independently in numerous lizard clades as a consequence of acceleration and changes in BCoM (Aerts et al., 2003; Clemente, 2014). Definition. 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