The first mammals evolved about 190 million years ago. The exact nature of the evolutionary relationships between modern humans and their ancestors remains the subject of debate.
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The evolution of mammals has passed through many stages since the first appearance of their synapsid ancestors in the pennsylvanian sub period of the late carboniferous period.
Human mammals evolution. When the dinosaurs disappeared about 65 million years ago mammals began to diversify into many forms. Warm bloodedness is believed to have first evolved among the cynodonts a late but successful group of mammal like reptiles from which the mammals evolved. Human evolution the process by which human beings developed on earth from now extinct primates.
These early mammals were small insectivorous nocturnal hairy and warm blooded animals. Human evolution is the evolutionary process that led to the emergence of anatomically modern humans beginning with the evolutionary history of primates in particular genus homo and leading to the emergence of homo sapiens as a distinct species of the hominid family which includes the great apes. These early mammals were small insect eating creatures that lived at the same time as the dinosaurs.
The only extant members of the human tribe hominini belong to the species homo sapiens. By the mid triassic there were many synapsid species that looked like mammals. The cynodonts were the only mammal like reptiles to survive to the jurassic.
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