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- 1 page needs to be rewritten
- 2 rename the page
- 3 Fix the formatting
- 4 Vandilism
- 5 the sidebranch industry
- 6 Orrorin as an early human ancestor
- 7 Why exactly is this fossil not a bonobo?
- 8 A hidden assumption of "progress towards human bipedalism"
- 9 the split between hominins and African great apes
- 10 Alt theory
page needs to be rewritten
This page needs to be rewritten by someone who know what "Orrorin" actually is. Having read this page I'm no wiser than before. --Pinkunicorn
Extinct species of Human or Ape, lived several million years ago, known from fossils found recently (sometime 1995-2001, i'm not sure) in Africa. That's about all i can remember, but maybe it's enough for someone to go and find out more.
rename the page
Orrorin tugenensis should be the name of the page, as it's an article on the species and not the genus. 188.8.131.52 21:14, 22 Sep 2004 (UTC)
I agree. A precedent has been set in previous pages with Ardipithecus relating to the genus and Australopithecus afarensis relating to the actual species (the convention being <Genus>_<species name>).--John Lynch 01:03, 13 Dec 2004 (UTC)
And this has been resolved.--John Lynch 04:34, 14 Dec 2004 (UTC)
Fix the formatting
I suggest a routine check for vandilism or displacement of information.
the sidebranch industry
Not only in this article the trend amongst paleo-anthropologists to consider some solitary finds done by the individual finds reason to claim, this is the REAL ancestor, all the other are sidebranches.
I honestly don't believe anything of that, and have never done so. (its encyclopedical garbage) My viewpoint is rather the oposite. we interbred with evrything we could or couldn't and thus kept the flexibility in between the variety of hominid species at an incredible, not even animalesk (perhaps), dna level. its just a suggestion.. but it might help paleoanthropolical research a few hundred years underways a few hundred years earlier.184.108.40.206 09:04, 24 July 2006 (UTC)
Orrorin as an early human ancestor
If Orrorin and Sahelanthropus are shown to have not only human characteristics, but also chimpanzee characteristics, the common ancestor of humans and chimpanzees has been found. This may refute the possiblity advocated by Wolpoff et. al. (2006) that Sahelanthropus was a member of an African ape clade related to humans and chimpanzees that left no descendants.
Wolpoff, M.H., J. Hawks, B. Senut, M. Pickford, and J. Ahern: "An Ape or The Ape: Is The Toumaï Cranium TM 266 a Hominid?" PaleoAnthropology 2006:36-50. —The preceding unsigned comment was added by 220.127.116.11 (talk) 20:53, 2 January 2007 (UTC).
Why exactly is this fossil not a bonobo?
Bonobos have both "chimp" and "human" (bipedal about 25% of the time) features. Why is this not a bonobo-like ancestor of both chimps and humans? If it is where does Australopithicus fit in? 18.104.22.168 21:44, 17 January 2007 (UTC)
- The Bonobo is one of the two chimpanzee species. The other is the Common Chimpanzee. When something says it has "chimp" features, that means features in common to both the Common Chimpanzee and the Bonobo. - UtherSRG (talk) 00:14, 18 January 2007 (UTC)
The text currently says:
The team that found these fossils in 2000 was led by Martin Pickford. Pickford claims that Orrorin is clearly a hominin; based on this, he dates the split between hominins and other African great apes to at least 7 million years ago.
This contains a specific assumption which many readers will miss and I suggest that it be pointed out. The assumption is that the oldest chimp-human relative to show bipedal characteristics must be the first "on the way" to being human. No such assumption is justified by science. Chimp ancestors may have been more bipedal, and less knuckle-walking specialized, than chimps, just for example.--Andrew Lancaster (talk) 15:15, 13 December 2007 (UTC)
- If you consider the molecular suggestions of Sapien and Gorilla/Chimp separation is later than bipedalism in the fossile record, then it is possible, maybe likely, that the common ancestor of humans and Gorilla/Chimps was a bipedal ape. —Preceding unsigned comment added by 22.214.171.124 (talk) 02:16, 16 July 2009 (UTC)
the split between hominins and African great apes
How can there be a split between hominins and great apes? According to Great ape a great ape is any member of Hominidae (therefore including humans), which is a superset of Hominini. Qemist (talk) 23:24, 13 October 2008 (UTC)
- It says African great apes, indicating modern african great apes, not Hominidae as a whole, but I can see how it may be misleading as it is written, if you have a better wording feel free to suggest. Maybe from OTHER great apes would be clearer? Nowimnthing (talk) 12:26, 16 July 2009 (UTC)
The section below was added by Dave souza in November 2007. However, only one of the references used (as available today) actually mentions Orrorin. The origin[s] of bipedalism is a very interesting topic, but (1) it's not the topic of this article, (2) only one reference is scientific, and (3) an "alternative theory" (per edit summary) always need to be present as such. So I removed this from the article. --Fama Clamosa (talk) 12:57, 3 December 2010 (UTC)
Thus, the origins of bipedalism occurred in an arboreal precursor living in forest and not a quadrupedal ancestor living in open country. A recently published idea suggests that ancestral apes may have shared the technique used by modern orangutans of moving bipedally over small springy branches with the vertebral column oriented vertically (orthograde), using their arms for balance and keeping their legs straight. This kind of upright locomotion could have been used as a way of getting around on the ground when gaps opened in the forest canopy. Our closest extant relatives the gorillas and chimpanzees developed a flexed stance (with clinograde, (sloping) vertebral column) and are more adapted to tree climbing and to quadrupedal locomotion while on the ground. According to a minority of researchers, like humans, they have fused and strengthened wrist bones suggesting a shared period of knuckle walking.
- Sample, I. (June 1, 2007). "New theory rejects popular view of man's evolution - Research - EducationGuardian.co.uk". Retrieved 2007-11-05.
- "BBC NEWS - Science/Nature - Upright walking 'began in trees'". 31 May 2007. Retrieved 2007-11-05.
- Thorpe S.K.S.; Holder R.L., and Crompton R.H. (24 May 2007). "PREMOG - Supplementry Info". Origin of Human Bipedalism As an Adaptation for Locomotion on Flexible Branches. Primate Evolution & Morphology Group (PREMOG), the Department of Human Anatomy and Cell Biology, the School of Biomedical Sciences at the University of Liverpool. Archived from the original on 2007-07-17. Retrieved 2007-11-01.