Palebiologist Prof. William Schopf

Palebiologist Prof. William Schopf

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Credit: CARLOS MUNOZ-YAGUE/EURELIOS/SCIENCE PHOTO LIBRARY

Caption: Professor William Schopf. Portrait of professor William Schopf, paleobiologist, with a coloured scanning electron micrograph (SEM) of bacteria in the background. Professor Schopf works at the University of California in Los Angeles, USA. He has established the dates of the earliest signs of life on Earth from fossil records. Blue-green algae (cyanobacteria) have been found dating back around 3.5 billion years. Schopf has gained information about the life forms from isotopic traces of chemicals from their diet still present in their bodies. An organism's diet can reveal its whole way of life. Photographed in 1997.

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Keywords: life, origin, origin of life, palaeobiologist, paleobiologist, portraits, researcher, sc, scho, schopf, surname s, william, william schopf

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