pronograde
/ˈprəʊnə(ʊ)ɡreɪd/Zoology
adjective
Of a primate: holding the body more or less horizontal; (of posture) not erect; quadrupedal. Contrasted with orthograde.
Origin
Early 20th century; earliest use found in Arthur Keith (1866–1955), museum curator and palaeoanthropologist. From classical Latin prōnus prone + -o- + -grade.