In order to properly explain how the multi-layered factors at play in this region determined human evolution--through the stages of bipedalism, the emergence of various other hominins such as Sahelanthropus tchadensis
and Homo erectus, before finally Homo sapiens arrived--we need to understand the interplay between global climates and tectonic activity.
On a dig in central Africa, a French paleontologist's team discovered the head bone and jaw of Sahelanthropus tchadensis
, a 'hominid' or human-like creature that would have existed seven million years ago.
This is the case for early hominin species such as Sahelanthropus tchadensis
, which shows a forward shift of the foramen magnum but has aroused some controversy as to whether it is more closely related to humans or African apes.
The most likely participant from the Homo lineage seems to have been Sahelanthropus tchadensis
9:15 PHYLOGENETIC RELATIONSHIPS BETWEEN THE UPPER MOLARS OF SAHELANTHROPUS TCHADENSIS
AND LATE MIOCENE HOMINOIDS AND HOMINIDS **.
Anthropologists working in Chad describe a fossil skull more than 6 million years old of Sahelanthropus tchadensis
, which maybe the oldest known human ancestral species (7/13/02,p.
Other possible contenders for the earliest proto-human fossil are Sahelanthropus tchadensis
, a skull found in Chad (Brunet et al.
A more recently identified hominid genus and species, Sahelanthropus tchadensis
, may have lived 7 million years ago.
Tambien en un principio se consideraron como los <<primeros hominidos>> al genero Sahelanthropus tchadensis
con 6 a 7 millones de anos y tambien el genero Orrorin tugenensis, pero por lo fragmentario de sus restos y morfologia dentaria no han sido incluidos como tales.
En 2001, en Republica de Chad, pais africano, se descubrio el que parecia ser el fosil mas antiguo de un antepasado humano, al que los cientificos llamaron Sahelanthropus tchadensis
, pero que coloquialmente se le llamo Toumai, nino en el lenguaje local.
Because the skull resembled no known species, the discoverers classified it in a new genus and species, naming it Sahelanthropus tchadensis
Toumai - of the newly dubbed species Sahelanthropus tchadensis
- could be as much as 1m years older than previously found hominid fossils, and at least 3m years older than the next-oldest hominid skulls.