Human evolution
From eagle-rock.org
- Human evolution is the evolutionary process that led to the emergence of anatomically modern humans. The topic typically focuses on the evolutionary history of the primates, rather than studying the earlier history that led to the primates.
- Genetic studies show that primates diverged from other mammals about 85 million years ago.
- The earliest documented representative of the genus Homo[1] is Homo habilis, which evolved around 2.8 million years ago, and is arguably the earliest species for which there is positive evidence of the use of stone tools. The brains of these early hominins[2] were about the same size as that of a chimpanzee.
- With the arrival of Homo erectus and Homo ergaster in the fossil record, cranial capacity had doubled to 850 cm3.
- According to the recent African origin of modern humans theory, modern humans evolved in Africa and migrated out of the continent some 50,000 to 100,000 years ago, gradually replacing local populations of Homo erectus, Denisova hominins, Homo floresiensis and Homo neanderthalensis.[3]
Australopithecus 4 million BP
File:Australopithecus family.jpg
Australopithecus family
- Australopithecus is an extinct genus of hominins (Homo and Australopithecus). From paleontological and archaeological evidence, the Australopithecus genus apparently evolved in eastern Africa around 4 million years ago before spreading throughout the continent and eventually becoming extinct somewhat after two million years ago.
- Australopithecus is an extinct genus of hominins (Homo and Australopithecus). From paleontological and archaeological evidence, the Australopithecus genus apparently evolved in eastern Africa around 4 million years ago before spreading throughout the continent and eventually becoming extinct somewhat after two million years ago.
Homo habilis 2.8-1.5 million BP
File:Homo habilis.JPG
Reconstruction of Homo habilis at the Westfälisches Museum für Archäologie, Herne
- Homo habilis (also Australopithecus habilis) is a species of the Hominini tribe, which lived from approximately 2.33 to 1.44 million years ago. Its brain size has been shown to range from 550 cm3 to 687 cm3, rather than from 363 cm3 to 600 cm3 as formerly thought. These more recent findings concerning brain size favor its traditional placement in the genus Homo. H. habilis was short and had disproportionately long arms compared to modern humans. H. habilis had a cranial capacity slightly less than half of the size of modern humans. Despite the ape-like morphology of the bodies, H. habilis remains are often accompanied by primitive stone tools (e.g. Olduvai Gorge, Tanzania and Lake Turkana, Kenya).
- Homo habilis (also Australopithecus habilis) is a species of the Hominini tribe, which lived from approximately 2.33 to 1.44 million years ago. Its brain size has been shown to range from 550 cm3 to 687 cm3, rather than from 363 cm3 to 600 cm3 as formerly thought. These more recent findings concerning brain size favor its traditional placement in the genus Homo. H. habilis was short and had disproportionately long arms compared to modern humans. H. habilis had a cranial capacity slightly less than half of the size of modern humans. Despite the ape-like morphology of the bodies, H. habilis remains are often accompanied by primitive stone tools (e.g. Olduvai Gorge, Tanzania and Lake Turkana, Kenya).
Homo rudolfensis 1.9 million BP
File:Homo rudolfensis - Naturhistorisches Museum, Braunschweig, Germany - DSC05208.JPG
Homo rudolfensis, Naturhistorisches Museum, Braunschweig, Germany
- Homo rudolfensis (also Australopithecus rudolfensis) is an extinct species of the Hominini tribe known only through a handful of representative fossils, discovered on the east side of Lake Rudolf (now Lake Turkana) in Kenya.
- Homo rudolfensis (also Australopithecus rudolfensis) is an extinct species of the Hominini tribe known only through a handful of representative fossils, discovered on the east side of Lake Rudolf (now Lake Turkana) in Kenya.
Homo ergaster in East and South Africa 1.9-1.4 million BP
- Homo ergaster (meaning "working man") or African Homo erectus is an extinct chronospecies of the genus Homo that lived in eastern and southern Africa between 1.9 million and 1.4 million years ago. It is one of the earliest hominins, which are those hominids that comprise the original members and species of the human clade after splitting from the line of the chimpanzees. (And Homo ergaster is variously thought to be ancestral to, or as sharing a common ancestor with, or as being the same species as, Homo erectus).
- Homo ergaster (meaning "working man") or African Homo erectus is an extinct chronospecies of the genus Homo that lived in eastern and southern Africa between 1.9 million and 1.4 million years ago. It is one of the earliest hominins, which are those hominids that comprise the original members and species of the human clade after splitting from the line of the chimpanzees. (And Homo ergaster is variously thought to be ancestral to, or as sharing a common ancestor with, or as being the same species as, Homo erectus).
Homo erectus 1.9-0.07 million BP
- Homo erectus (meaning "upright man", from the Latin ērigere, "to put up, set upright") is an extinct species of hominid that lived throughout most of the Pleistocene geological epoch. Its earliest fossil evidence dates to 1.9 million years ago and the most recent to 70,000 years ago. It is generally thought that H. erectus originated in Africa and spread from there, migrating throughout Eurasia as far as Georgia, India, Sri Lanka, China and Indonesia. But other scientists posit that the species rose first, or separately, in Asia.
- Homo erectus (meaning "upright man", from the Latin ērigere, "to put up, set upright") is an extinct species of hominid that lived throughout most of the Pleistocene geological epoch. Its earliest fossil evidence dates to 1.9 million years ago and the most recent to 70,000 years ago. It is generally thought that H. erectus originated in Africa and spread from there, migrating throughout Eurasia as far as Georgia, India, Sri Lanka, China and Indonesia. But other scientists posit that the species rose first, or separately, in Asia.
Homo antecessor 1.2-0.8 million BP
File:Homo antecessor male.jpg
Reconstruction of a male Homo antecessor
- Homo antecessor is an extinct human species (or subspecies) dating from 800,000 to 1.2 million years ago. The species must be related to Out of Africa I, the first series of hominin expansions into Eurasia, making it one of the earliest known human species in Europe. Various archaeologists and anthropologists have debated how H. antecessor relates to other Homo species in Europe, with suggestions that it was an evolutionary link between H. ergaster and H. heidelbergensis.
- Homo antecessor is an extinct human species (or subspecies) dating from 800,000 to 1.2 million years ago. The species must be related to Out of Africa I, the first series of hominin expansions into Eurasia, making it one of the earliest known human species in Europe. Various archaeologists and anthropologists have debated how H. antecessor relates to other Homo species in Europe, with suggestions that it was an evolutionary link between H. ergaster and H. heidelbergensis.
References
- ↑ Homo is the genus that comprises the species Homo sapiens, which includes modern humans, as well as several extinct species classified as ancestral to or closely related to modern humans.
- ↑ The group consisting of modern humans, extinct human species and all our immediate ancestors.
- ↑ Wikipedia, Human evolution
External links
- Human evolution - Wikipedia - Human evolution is the evolutionary process that led to the emergence of anatomically modern humans. The topic typically focuses on the evolutionary history of the primates—in particular the genus Homo, and the emergence of Homo sapiens as a distinct species of the hominids (or "great apes")—rather than studying the earlier history that led to the primates. The study of human evolution involves many scientific disciplines, including physical anthropology, primatology, archaeology, paleontology, ethology, linguistics, evolutionary psychology, embryology and genetics.
- Timeline of human evolution - Wikipedia - The timeline of human evolution outlines the major events in the development of the human species, Homo sapiens, and the evolution of human ancestors. It includes brief explanations of some of the species, genera, and the higher ranks of taxa that are seen today as possible ancestors of modern humans.
