Lucy – Was She Living in a Lake Margin?
In the end of June I went to Addis Ababa, Ethiopia, were I visited the National Museum. Here the remnants of the world’s most famous fossil, Lucy, can be found. The skeleton is 40% complete and is estimated to be 3.2 million years old.
Lucy was discovered in 1974 near Hadar in Ethiopia, by Donald Johanson and his colleague Maurice Taieb. She was classified as Australopithecus afarensis.Donald Johanson and others have suggested that Lucy had been living in a mosaic environment (forests, grasslands, lakes). However, the fossil of Lucy was found next to crocodile and turtle eggs and crab claws (Johanson & Taieb 1976).
Today the excavation site lies in a dessert, but 3, 2 million years ago the area were green and flourishing. Many scientists have suggested that Lucy fell in to a lake after she died – but perhaps lake margins was the biotope she preferred? Probably she was actually feeding from the lake.
Throughout the years, the so called Aquatic Ape Theory has been ridiculed – even if the most famous fossil was found next to crocodile eggs and crab claws.
However, the distinct adaptation to a water-based lifestyle took place later. Homo Erectus was probably much more adapted to an littoral environment than her Australopithecine forefathers – as a swimmer and free-diver (see earlier posts).
In the National Museum of Ethiopia you can also find see the skulls of Omo 1 and Omo 2, the oldest fossils of Homo Sapiens ever found. They are estimated to be around 190 000 years old. Today, the Omo Valley of Ethiopia is one of the most unique places on earth because of the wide variety of people.
Johanson, D.C., and Taieb, M., 1976, Plio-Pleistocene hominid discoveries in Hadar, Ethiopia: Nature, v. 260, p. 293–297