What is rheumatoid arthritis? Rheumatoid arthritis is an autoimmune disorder that causes chronic inflammation of joints. Rheumatoid arthritis (RA) tends to begin slowly with minor symptoms that come and go, usually on both sides of the body, and progress over a period of weeks or months. Symptoms of this chronic disease vary from person to person and can change from day to day.
Sahelanthropus was the earliest, dating 7-6 million years ago. Orrorin lived about 6 million years ago, while Ardipithecus remains have been dated to 5.8-4.4 million years ago. At present, the vote is still out as to whether any of these three primates were in fact true hominins and if they were our ancestors.he earliest australopithecines very likely did not evolve until 5 million years ago or shortly thereafter (during the beginning of the Pliocene Epoch) in East Africa. The primate fossil record for this crucial transitional period leading to australopithecines is still scanty and somewhat confusing.
  A:The first modern humans (Homo sapiens sapiens) appeared on earth around more than one hundred thousand years ago. They began to replace Neanderthal man (Homo sapiens neanderthalis or, more recently, Homo neanderthalis) in Europe around 50,000 years ago.ho they were and what they did represents a large field of study, pursued by Archaeologists, Anthropologists and Evolutionary Biologists. 1  According to Quran, Adam & Hawa were the first humans born on earth. 2  According to the Bible (Genesis Chapter 4), the first born person on earth was Cain, the child of Adam and Eve.