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Zebras: Immer der Erinnerung nach

Zebras folgen ihrer Erinnerung, um auf der alljährlichen Wanderung während der Regenzeit ihr Ziel zu erreichen. Entscheidend für ihre Route ist die Erinnerung daran, wie die Vegetation am Zielort durchschnittlich in der Vergangenheit ausgesehen hat. Die unterwegs vorgefundende Vegetation und deren kurzfristige Wahrnehmung spielt für die Richtung eine untergeordnete Rolle. Das berichtet ein Senckenberg-Forscherteam ¬im Fachmagazin „Proceedings of the Royal Society B“. Die Wanderrouten großer Landsäugetiere wie Zebras könnten daher weniger flexibel sein, als bisher angenommen wurde. (more…)

‘Ancient Bipedal Hominid Dubbed ‘Nutcracker Man’ Preferred Grass to Nuts’

By Guest PostMay 3, 2011Scienceafrican landscape, ancestors of humans, bipedal hominid, c3 photosynthetic, c4 photosynthetic pathway, carbon isotopes, emma mbua, hard fruit, hominid, huge molars, matt sponheimer, meave leakey, northern kenya, nutcracker man, nuts, paranthropus, paranthropus boisei, powerful jaws, savannah grasses, seeds, teeth, thure cerling, tropical environments, university of colorado boulder, zebras

An ancient, bipedal hominid sporting a set of powerful jaws and huge molars that earned it the nickname “Nutcracker Man” likely didn’t crack nuts at all, preferring instead to slurp up vast quantities of grasses and sedges, says a new study.

The hominid, known as Paranthropus boisei, ranged across the African landscape more than 1 million years ago and lived side-by-side with direct ancestors of humans, said University of Colorado Boulder anthropology Professor Matt Sponheimer, a study co-author. It was long assumed Paranthropus boisei favored nuts, seeds and hard fruit because of its huge jaws, powerful jaw muscles and the biggest and flattest molars of any known hominid in the anthropological record, he said. (more…)

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Zebras: Immer der Erinnerung nach

‘Ancient Bipedal Hominid Dubbed ‘Nutcracker Man’ Preferred Grass to Nuts’