Mathieu Duval
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Articles by Mathieu Duval
Los paleontólogos podrían estar dañando los fósiles con un método que se creía seguro
Los fósiles son valiosos archivos del pasado. Conservan detalles sobre los seres vivos de hace miles o cientos de millones de años. Su estudio nos ayuda a comprender la evolución de las especies a lo largo del tiempo y nos permite vislumbrar instantáneas de los entornos y climas del pasado. También pueden revelar las dietas o los patrones migratorios de especies desaparecidas hace mucho tiempo, incluidos nuestros antepasados.
Scientists could be accidentally damaging fossils with a method we thought was safe
Fossils are invaluable archives of the past. They preserve details about living things from a few thousand to hundreds of millions of years ago. Studying fossils can help us understand the evolution of species over time, and glimpse snapshots of past environments and climates. Fossils can also reveal the diets or migration patterns of long-gone species – including our own ancestors. But when living things turn to rock, discerning those details is no easy feat.
Scientists could be accidentally damaging fossils with a method we thought was safe
Fossils are invaluable archives of the past. They preserve details about living things from a few thousand to hundreds of millions of years ago. Studying fossils can help us understand the evolution of species over time, and glimpse snapshots of past environments and climates. Fossils can also reveal the diets or migration patterns of long-gone species—including our own ancestors. But when living things turn to rock, discerning those details is no easy feat.
Micro-CT Scans Could Damage Fossils Despite Seen As Safe: Study
Fossils are rare and fragile by nature. (Representational) Micro-CT scanning produces high-resolution 3D images of fossils without cutting them open Micro-CT uses X-rays, which are ionising radiation capable of causing molecular damage Study found micro-CT scanning reduces collagen in fossils by about 35 percent Gold Coast: Fossils are invaluable archives of the past. They preserve details about living things from a few thousand to hundreds of millions of years ago.
Humans in Africa’s wet tropical forests 150 thousand years ago - Nature
Abstract Humans emerged across Africa shortly before 300 thousand years ago (ka)1,2,3. Although this pan-African evolutionary process implicates diverse environments in the human story, the role of tropical forests remains poorly understood. Here we report a clear association between late Middle Pleistocene material culture and a wet tropical forest in southern Côte d’Ivoire, a region of present-day rainforest.
The demise of the giant ape Gigantopithecus blacki - Nature
Abstract The largest ever primate and one of the largest of the southeast Asian megafauna, Gigantopithecus blacki1, persisted in China from about 2.0 million years until the late middle Pleistocene when it became extinct2,3,4. Its demise is enigmatic considering that it was one of the few Asian great apes to go extinct in the last 2.6 million years, whereas others, including orangutan, survived until the present5. The cause of the disappearance of G.
For the first time ever, we have a complete skull description of a true fossil giant wombat
The place we call Australia today was in many ways vastly different 80,000 years ago. Perhaps nowhere is this more evident than in the animals that would have roamed the plains and inhabited the forests of the continent. Huge marsupials ruled the land, including giant kangaroos, giant koalas and giant wombats. In a study published today in Papers in Palaeontology, we describe the most complete skull of one of these giant wombats, a hitherto poorly known species called Ramsayia magna.
New Chronological Constraints for the Late Pleistocene Fossil Assemblage and Associated Breccia from Ngalau Sampit, Sumatra
Introduction Southeast Asia is of growing importance in the study of hominin evolution and migration. It was home to at least four hominin species identified from fossil material (Homo erectus, H. floresiensis, H. luzonensis, H. sapiens) as well as several hominid genera including Pongo, Meganthropus, and Gigantopithecus (Kaifu, 2017; Détroit et al. 2019; Welker et al. 2019; Zanolli et al. 2019).
Multiple hominin dispersals into Southwest Asia over the past 400,000 years - Nature
Abstract Pleistocene hominin dispersals out of, and back into, Africa necessarily involved traversing the diverse and often challenging environments of Southwest Asia1,2,3,4. Archaeological and palaeontological records from the Levantine woodland zone document major biological and cultural shifts, such as alternating occupations by Homo sapiens and Neanderthals.
Publisher Correction: First experimental evaluation of the alpha efficiency in coarse-grained quartz for ESR dating purposes: implications for dose rate evaluation
Correction to: Scientific Reports https://doi.org/10.1038/s41598-019-54688-9, published online 24 December 2019 This Article contains errors in Table 4.
1.9-million- and 2.4-million-year-old artifacts and stone tool-cutmarked bones from Ain Boucherit, Algeria
Early humans in northern Africa Evidence for the earliest stone tools produced by human ancestors (from ∼2.6 million years ago) has hitherto come from East Africa. Sahnouni et al. report the discovery of Oldowan stone artifacts and associated cutmarks on fossil bones excavated in Algeria, with the earliest dated to 2.4 million years ago. Thus, hominins inhabited the Mediterranean fringe in North Africa earlier than commonly believed.
Findings on old stone tools in North Africa suggest new possibilities for the story of human origin
When did early humans first arrive in the Mediterranean area? New archaeological evidence published on Thursday by the journal Science (as a First Release) indicates their presence in North Africa at least 2.4 million years ago. This is about 600,000 years earlier than previously thought. The results, from the Ain Boucherit site in north eastern Algeria, provide new information on a time window involving the earliest representative of the Homo genus.
Will East Africa lose title as the birthplace?
When did early humans first arrive in the Mediterranean area? New archaeological evidence published last week online by the journal Science (as a First Release) indicates their presence in North Africa at least 2.4 million years ago. This is about 600,000 years earlier than previously thought. The results, from the Ain Boucherit site in north eastern Algeria, provide new information on a time window involving the earliest representative of the Homo genus.
Stone tools prove humans were in North Africa 2.4 million years ago
When did early humans first arrive in the Mediterranean area? New archaeological evidence published today online by the journal Science (as a First Release) indicates their presence in North Africa at least 2.4 million years ago. This is about 600,000 years earlier than previously thought.
Stone tools date early humans in North Africa to 2.4 million years ago
Archaeological excavation at Ain Boucherit, Algeria. Credit: Mathieu Duval, Author provided When did early humans first arrive in the Mediterranean area? New archaeological evidence published today online by the journal Science (as a First Release) indicates their presence in North Africa at least 2.4 million years ago. This is about 600,000 years earlier than previously thought.
Stone tools date early humans in North Africa to 2.4 million years ago
Archaeological excavation at Ain Boucherit, Algeria. Mathieu Duval, Author provided When did early humans first arrive in the Mediterranean area? New archaeological evidence published today online by the journal Science (as a First Release) indicates their presence in North Africa at least 2.4 million years ago. This is about 600,000 years earlier than previously thought.
Stone tools date early humans in North Africa to 2.4 million years ago
When did early humans first arrive in the Mediterranean area? New archaeological evidence published today online by the journal Science (as a First Release) indicates their presence in North Africa at least 2.4 million years ago. This is about 600,000 years earlier than previously thought. The results, from the Ain Boucherit site in north eastern Algeria, provide new information on a time window involving the earliest representative of the Homo genus.
Des traces de présence humaine de 2,4 millions d’années découvertes en Algérie
L’étude des premiers peuplements humains préhistoriques du pourtour méditerranéen fait l’objet d’intenses recherches depuis de nombreuses décennies. Dans un article publié jeudi 29 novembre dans la revue américaine Science, nous apportons un nouvel éclairage sur cette question : des traces de présence humaine datées de 2,4 millions d’années ont été découvertes dans le nord de l’Algérie. Que révèlent-elles ?
1.9-million- and 2.4-million-year-old artifacts and stone tool-cutmarked bones from Ain Boucherit, Algeria
Abstract East Africa has provided the earliest known evidence for Oldowan stone artifacts and hominin induced stone tool cutmarks dated to ~2.6 million years ago (Ma). The ~1.8 Ma stone artifacts from Ain Hanech (Algeria) were considered to represent the oldest archaeological materials in North Africa.
Response to Comment on “The earliest modern humans outside Africa”
In reply to Sharp and Paces’ comments on our recent paper (1), we here clarify some points that may have remained unappreciated in our initial work. Sharp and Paces (2) claim that Misliya-1 may not be as old [177 to 194 thousand years (ka)] as we argued (1). They propose an alternative interpretation for the U-series data we reported on calcitic crusts [table S1 of (1)], leading to the calculation of an apparent age of 60 to 70 ka.
Un nouvel éclairage sur les premiers peuplements préhistoriques en Europe
Des preuves supplémentaires proviennent de l’étude des fossiles. Jusqu’à très récemment, le peuplement humain de l’Europe au cours du Pléistocène moyen (période géologique entre 780 000 ans et 125 000 ans) était généralement considéré comme étant relativement simple avec l’évolution linéaire d’une lignée unique débouchant sur les Neandertaliens.
Il y a 300 000 ans en Europe, on produisait – déjà – des armes ?
Porto Maior introduit une complexité supplémentaire à ce modèle qui se chevauche et suggère que des populations humaines distinctes et d’origines géographiques différentes coexistèrent durant le Pléistocène moyen (il y a entre 773 000 et 125 000 ans).
Discovery of giant hand axes suggest a prehistoric 'Game of Thrones' scenario in ancient Europe
Even our earliest human ancestors made and used technology — something we can look back on thanks to the lasting nature of stone tools. An exceptionally high density of giant hand axes dated to 200,000-300,000 years ago has been uncovered at an archaeological site in Galicia, northwest Spain.
Giant handaxes suggest that different groups of early humans coexisted in ancient Europe
by Martina Demuro, Lee Arnold And Mathieu Duval, The Conversation Researchers work on the archaeological site in Spain, known as Porto Maior, where the tool deposits were found. Credit: Eduardo Méndez Quintas, Author provided Even our earliest human ancestors made and used technology—something we can look back on thanks to the lasting nature of stone tools.
Giant handaxes suggest that different groups of early humans coexisted in ancient Europe
Even our earliest human ancestors made and used technology - something we can look back on thanks to the lasting nature of stone tools. An exceptionally high density of giant handaxes dated to 200,000-300,000 years ago has been uncovered at an archaeological site in Galicia, northwest Spain. The findings are documented in a new article published by our international research team of archaeologists and dating specialists.
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