Species The Smithsonian Institution s Human Origins Program While the exact number of early human species is debated, on this page are links to summaries of the early human species accepted by most scientists Click on any species to learn about it Below the summaries is a chart showing the time span during which fossils of each species have been found. Human In common usage, the word human generally refers to the only extant species of the genus Homo anatomically and behaviorally modern Homo sapiens. In scientific terms, the meanings of hominid and hominin have changed during the recent decades with advances in the discovery and study of the fossil ancestors of modern humans.The previously clear boundary between humans and What makes two species different The role of selfish For most of the th century, scientists believed that this reproductive incompatibility evolved gradually between species as a by product of adapting to different ecological circumstances if two Names for the human species The common name of the human species in English is historically man from Germanic , often replaced by the Latinate human since the th century In addition to the generally accepted taxonomic name Homo sapiens Latin sapient man, Linnaeus , other Latin based names for the human species have been created to refer to various aspects of the human character. BBC Earth Is this a new species of human They re not quite Neanderthals and not quite modern humans They re something else, but no one is sure what Newly examined fossils suggest that an unknown species of human was roaming parts of Human Evolution Timeline archaeologyinfo T he primate family hominidae consists of two commonly accepted genera, Australopithecus and Homo However, two other genera are proposed The genus Ardipithecus has recently been described and placed as the earliest common ancestor to all hominids Also, others accept the genus Paranthropus that I will here include as a member of the genus Australopithecus. Neoteny and Two Way Sexual Selection in Human Evolution home essays on science and technology Neoteny and Two Way Sexual Selection in Human Evolution Neoteny and Two Way Sexual Selection in Human Evolution by David Brin, Ph.D A Paleo Anthropological Speculation on the Origins of Secondary Sexual Traits, Male Nurturing and the Child as a Finkbuilt Blog Archive Mutant Human Species Imminent Responses to Mutant Human Species Imminent Phill Says Is O O Otto Binder, perhaps Steve Says Good call, Phill Marvel was shut down in , so these guys probably had some transitional time on their hands, and started doing this Mechanix Illustrated stuff Glossary PBS acquired trait A phenotypic characteristic, acquired during growth and development, that is not genetically based and therefore cannot be passed on to the next generation for example, the large Homo Species Close to Present Human That Existed on the The Earth has a . billion year history However, Archaic Homo Sapiens Modern Humans evolved between , and , years ago Humans evolved from the family Hominid great apes , that existed on earth around million years ago Unlike today, there were different human species that existed on earth.