By W. Henry Gilbert, Berhane Asfaw
This quantity, the 1st in a chain dedicated to the paleoanthropological assets of the center Awash Valley of Ethiopia, stories Homo erectus, an in depth relative of Homo sapiens. Written via a staff of extremely popular students, this publication presents the 1st distinct descriptions, images, and research of the fossil vertebrates--from elephants and hyenas to humans--from the Daka Member of the Bouri Formation of the Afar, a spot well known for an considerable and long checklist of human ancestors. those fossils give a contribution to our realizing human evolution, and the linked fauna supply new information regarding the distribution and variability of Pleistocene mammals in japanese Africa. The members are all energetic researchers who labored at the paleontology and geology of those certain deposits. the following they've got mixed their disparate efforts right into a unmarried quantity, making the unique examine effects available to either the expert and the overall reader. the quantity synthesizes environmental backdrop and anatomical element to open an extraordinary window at the African Pleistocene and its population.
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Extra info for Homo erectus: Pleistocene Evidence from the Middle Awash, Ethiopia (The Middle Awash Series)
1999). The transition from the Hata Member to the overlying Daka Member is easily distinguishable at several locations along the strike of the Bouri Peninsula. The resistant Hata Member carbonate (ϳ20–30 cm thick) is unconformably capped by the distinctive cross-bedded Hereya Pumice Unit (HPU) of the Daka Member. 5). For this reason, areas containing fossils of questionable stratigraphic provenience were avoided during collection. 5 Survey team on Daka Member sediments at BOU-VP-2. View is to the south, with Ayelu Volcano dominating the horizon above the horizontal line of trees indicating the course of the modern Awash River.
The occurrences of silty clays with invertebrate fossil remains, the diatomaceous Wokari Tuﬀ, and the thick sandstone with pumice cobbles suggest that the depositional environment was characterized by alternating ﬂuvial and shallow lacustrine settings, similar to the Urugadehu area to the north. Revenani (Section 4) This section is located east of the main Bouri Village cemetery. Unlike the Ley Gita section to the north, the diatomaceous Wokari Tuﬀ occurs at or near the top of the section, with silty clays locally cropping out on top of the altered diatomaceous tuﬀ.
After pin ﬂags had been placed, a team of two people with an understanding of the stratigraphy and collection protocols then recovered and plotted each collectable ﬂagged specimen, closely following imagery to make sure the recovery team covered all areas. Each Daka locality was systematically collected in this way numerous times over several ﬁeld seasons. Despite intensive search, no micromammal quarries were established in Daka Member sediments, presumably because these largely sandy units were deposited by highenergy ﬂow.