BIOLOGY 1M03 Chapter Notes - Chapter 11: Orrorin, Canine Tooth, Sahelanthropus
15 May 2017
School
Department
Course
Professor
Document Summary
Hominins are not included in the same genus (homo) as modern humans. At the beginning last common ancestor of humans and chimpanzees lived between 7 and 5 mya. Ardipithecus ramidus, orrorin tugenensis, and sahelanthropus tchadensis have begun to shed light in history of human lineage. Unclear whether ardipithecus is related more closely to humans or to chimpanzees. Orrorin tugenensis second early fossil with similarities to humans incisors, canines, and one of the premolars are more like with the teeth of chimpanzees than of later hominins. Arm and finger bones have features that are believed to be adaptations for climbing. Habitat was a mix of woodland and savanna thigh bones are more similar to those of later hominins than to those of apes. A number of hominin species lived in africa between 4 to 2 mya: they are divided into three genera: australopithecus, paranthropus, and.
