Isotopic evidence for contrast diets of early hominins Homo habilis and Australopithecus boisei of Tanzania

Isotopic dietary studies of early hominins have hitherto been confined to specimens from South Africa. We are now able to report isotopic analyses of two species of early hominins from Tanzania : Homo habilis and Australopithecus boisei. The results show that these two species had very different diets. The isotopic analyses of three South African species of early hominins, in contrast, show considerable variation in individual diets, but no marked differences between species

3D Survey in Extreme Environment: The Case Study of LaetoliHominin Footprints in Tanzania

Many cultural assets are in risky situations and they are destined to disappear. Sometimes problems are caused bythe anthropic component (e.g. wars) or by natural disasters (e.g. earthquakes and landslides). At other times thecause of deterioration is due to the slow and inexorable action of atmospheric agents and other natural factorspresent in extreme areas, where preservation of Cultural Heritage is more complex.This contribution deals with 3D documentation of paleontological excavations in extreme contexts that arecharacterized by unfavorable climatic conditions, limited instrumentation and little time available. In particular, thecontribution is focused on the search for a good working procedure which, despite the problems mentioned above,can lead to valid results in terms of accuracy and precision, so that subsequent scientific studies are notcompromised. The proposed case study concerns the recent discovery of fossil footprints at the Site S in Laetoli,within the Ngorongoro Conservation Area (Tanzania), which is a UNESCO World Heritage Site. With the newdiscovery of Site S it was necessary to implement a 3D survey operative protocol with limited equipment and in avery short time. The 3D models, obtained through the “Structure from Motion” (SfM) technique and topographicsupport, were used to perform morphological and morphometric investigations on the new footprints. Through theanalysis it was possible to estimate height and weight of the footprint makers (hominins of the speciesAustralopithecus afarensis). The collected evidence supports marked intraspecific variation in this species, pointingout the occurrence of a considerable difference in size between sexes and suggesting inferences on reproductivebehavior and social structure of these ancient bipedal hominins.The contribution shows how important is to obtain good 3D documentation, even in extreme environment, in orderto reach reliable results for scientific analysis

Frozen in the Ashes

Fossil footprints are very useful palaeontological tools. Their features can help to identify their makers and also to infer biological as well as behavioural information. Nearly all the hominin tracks discovered so far are attributed to species of the genus Homo. The only exception is represented by the trackways found in the late 1970s at Laetoli, which are thought to have been made by three Australopithecus afarensis individuals about 3.66 million years ago. We have unearthed and described the footprints of two more individuals at Laetoli, who were moving on the same surface, in the same direction, and probably in the same timespan as the three found in the 1970s, apparently all belonging to a single herd of bipedal hominins walking from south to north. The estimated stature of one of the new individuals (about 1.65 m) exceeds those previously published for Au. afarensis. This evidence supports the existence of marked morphological variation within the species. Considering the bipedal footprints found at Laetoli as a whole, we can hypothesize that the tallest individual may have been the dominant male, the others smaller females and juveniles. Thus, considerable differences may have existed between sexes in these human ancestors, similar to modern gorillas

3D survey in extreme environment. The case study of Laetoli hominin footprints in Tanzania

Many cultural assets are in risky situations and they are destined to disappear. Sometimes problems are caused by the anthropic component (e.g. wars) or by natural disasters (e.g. earthquakes and landslides). At other times the cause of deterioration is due to the slow and inexorable action of atmospheric agents and other natural factors present in extreme areas, where preservation of Cultural Heritage is more complex. This contribution deals with 3D documentation of paleontological excavations in extreme contexts that are characterized by unfavorable climatic conditions, limited instrumentation and little time available. In particular, the contribution is focused on the search for a good working procedure which, despite the problems mentioned above, can lead to valid results in terms of accuracy and precision, so that subsequent scientific studies are not compromised. The proposed case study concerns the recent discovery of fossil footprints at the Site S in Laetoli, within the Ngorongoro Conservation Area (Tanzania), which is a UNESCO World Heritage Site. With the new discovery of Site S it was necessary to implement a 3D survey operative protocol with limited equipment and in a very short time. The 3D models, obtained through the “Structure from Motion” (SfM) technique and topographic support, were used to perform morphological and morphometric investigations on the new footprints. Through the analysis it was possible to estimate height and weight of the footprint makers (hominins of the species Australopithecus afarensis). The collected evidence supports marked intraspecific variation in this species, pointing out the occurrence of a considerable difference in size between sexes and suggesting inferences on reproductive behavior and social structure of these ancient bipedal hominins. The contribution shows how important is to obtain good 3D documentation, even in extreme environment, in order to reach reliable results for scientific analysis

author response new footprints from laetoli tanzania provide evidence for marked body size variation in early hominins

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Archaeology in Africa. Potentials and perspectives on laboratory & fieldwork research

Africa encompasses a multitude of environments and biomes that require specific scientific strategies – from desktop studies to field research to laboratory analysis – to tackle research questions that may range from the emergence of early humans to the ethnoarchaeological investigation. In several areas, turmoil, social instability and security constraints hamper or limit field activities and long-term funded programs. The kidnapping of German colleagues and the tragic death of two local collaborators in Nigeria urge to rethink our agenda and challenge our view of current research practice. This 1st Workshop on “Archaeology in Africa”, organized by Sapienza University of Rome, convened several researches from Italy or Italy-based researchers. The aim was to present and discuss theoretical, methodological and financial problems for Africanist researchers today. In a global perspective, the synergy between research groups is crucial. The need to intensify the national and international cooperation is also an essential step. This book collects a selection of the different perspectives presented to the workshop, mostly focussing from North Africa and East Africa

New footprints from Laetoli (Tanzania, 3.66 Ma). Discovery, analysis, inferences, research project and conservation plans

Fossil footprints are of great interest. A number of features help to identify their makers and can be used to investigate on biological and ecological issues. This is of crucial interest in palaeoanthropology, particularly in view of the emergence of our peculiar pattern of posture and locomotion. However, hominin footprints are rare and most of them are ascribed to the genus Homo. The only exception is represented by the trackways discovered in 1978 at Laetoli Site G, northern Tanzania, and referred to Australopithecus afarensis. These footprints were left on volcanic ashes about 3.66 million years ago by three bipedal creatures walking on a humid layer that was subsequently cemented. At Laetoli Site S (about 150 meters from Site G), we have unearthed new bipedal footprints of two different individuals, who were moving on the same palaeosurface, in the same direction and at the same speed as the three exposed at Site G. Our analysis based on advanced photogrammetric methods shows that the estimated stature and related body mass of one of the new individuals greatly exceed the estimates for those from Site G. This evidence supports marked intraspecific variation, pointing out the occurrence of a considerable difference in size between sexes and suggesting inferences on reproductive behaviour and social structure of these ancient bipedal hominins. A research project combined with conservation plans urgently needs to be developed and submitted to the Tanzanian Authorities for the knowledge, preservation and valorisation of such an extraordinary cultural heritage