TO GO WITH AFP STORY BY MARIETTE LEROUX / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / UNIVERSITE PARIS-SUD / HERVE SAUQUET & JURG SCHONENBERGER" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS
This handout picture received on July 31, 2017 by the Universite Paris-Sud shows a schematic representation of how all living flowers ultimately derive from a single ancestor (pictured in the centre) that lived about 140 million years ago. The first flower to appear on the path of plant evolution, during the time of the dinosaurs, was bisexual with petal-like organs arranged in concentric circles, researchers said on July 31, 2017. / AFP PHOTO / Universite Paris-Sud / Jurg SCHONENBERGER AND Herve SAUQUET / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / UNIVERSITE PARIS-SUD / HERVE SAUQUET & JURG SCHONENBERGER" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS