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The Origins of War | Human Nature - Springer How old is war? Is it a deep-seated propensity in the human species or is it a recent cultural invention? This article investigates the archaeological evidence for prehistoric war across world regions by probing two competing hypotheses The “deep roots” thesis asserts that war is an evolved adaptation that humans inherited from their common ancestor with chimpanzees, from which they split
The decline of mammal functional and evolutionary diversity . . . Moreover, the decline and loss of species reduces the cumulative evolutionary history present in any community (7, 13, 14) This evolutionary history is often represented by phylogenetic diversity (PD), or the diversity of lineages present within an assemblage of species, measured as the cumulative length of the branches on the evolutionary tree (phylogeny) linking the species
Evolution of mammalian auditory ossicles - Wikipedia In other words, jaw joints and ears do not define any except the most recent groups of mammals Mammalian and non-mammalian jaws In the mammal configuration, the quadrate and articular bones are much smaller and form part of the middle ear Note that in mammals the lower jaw consists of only the dentary bone [24]
Estimating How Many Species Humans Have Driven to Extinction According to the International Union for Conservation of Nature (IUCN) Red List, 777 animals have gone extinct since the beginning of the modern era in 1500 While some of those extinctions occurred due to natural causes, human impact has most certainly worsened conditions for many vulnerable species
Mapping nonhuman cultures with the Animal Culture Database ing to each group of animals, including location, size, and where it falls in a species’ social structure when appli - cable (Table 2) is last item is particularly important in the case of
Modern mammals originated after dinosaur extinction . . . - UCL The authors used the novel method to analyse a mammal genomic dataset and answer a long-standing question around whether modern placental mammal groups originated before or after the Cretaceous-Palaeogene (K-Pg) mass extinction, which wiped out over 70% of all species, including all dinosaurs
Mammal extinctions and the increasing isolation of humans on . . . We simulated species loss on the mammalian phylogenetic tree, informed by species current extinction risks We explored how Homo sapiens could become isolated in the tree if species currently threatened with extinction disappeared We analyzed correlates of mammal extinctions risks that may drive this isolation pattern