Human beings evolved from undersea worm

The first vertebrates, the ancestral line of animals that led to the human race, appeared on earth at least 40 million years earlier than previously believed, according to British scientists studying fossils of enigmatic, worm-like creatures called conodonts.

Their conclusion is based on new evidence that the gripping teeth of ancient conodonts were made of bone cells of the type that occur only in animals with backbones. The development of bone in primitive, soft-bodied animals was one of the great landmarks of evolution, opening the way for higher animals, starting with bony fishes and leading to the human race. [1]

  1. http://www.nytimes.com/1992/05/29/us/evidence-of-bone-shows-vertebrates-to-be-far-older-than-once-believed.html []

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