Word: ramidus
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
When Haile-Selassie compared the newly discovered bones and teeth with those of Ardipithecus ramidus, a 4.4 million-year-old hominid found in the Middle Awash in the early 1990s that was the previous record holder, he realized that the two creatures were very similar. But the older one's teeth, while different from an ape's, do have a number of characteristics that are decidedly more apelike than those of the younger hominid...
...basis of these minor but distinctive differences, Haile-Selassie decided to classify the new human ancestor as a subspecies, or variant, of ramidus and has given it the name Ardipithecus ramidus kadabba. (The name is derived from the local Afar language. Ardi means ground or floor; ramid means root; and kadabba means basal family ancestor. In accordance with the sometimes bizarre nomenclature of science, the younger creature now gets renamed Ardipithecus ramidus ramidus...
...that it's wrong. The earliest humans, it turns out, didn't live in grasslands. Dry climate or not, a companion paper published last week in Nature shows on the basis of the other fossilized flora and fauna, as well as the chemistry of the ancient soil, that Ardipithecus ramidus kadabba lived in a well-forested environment. That's also the case with other extremely ancient hominids found during the past several years, including Ardipithecus ramidus ramidus and a species called Orrorin tugenensis, announced last December by French and Kenyan researchers. And while the ability to walk on two legs...
...colleagues haven't collected enough bones yet to reconstruct with great precision what kadabba looked like. But they do know it was about the size of modern common chimpanzees, which when standing average about 4 ft. tall. That makes it roughly the same size as its close relative A. ramidus ramidus and about 20% taller than Lucy, the famous 3.2 million-year-old human ancestor discovered about 50 miles away in 1974 that is even further along the evolutionary track. The size of kadabba's brain and the relative proportions of its arms and legs were probably chimplike as well...
...Ardipithecus ramidus...