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5 Ιουλ 2016 · Major transitions require the evolution of greater complexity and the emergence of new evolutionary levels or processes. Does human evolution meet these conditions? I explore the diversity of evidence on the nature of transitions in human evolution.
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Major transitions require the evolution of greater...
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change. It is suggested that the evolution of the hominin...
- The Shaping of Human Diversity
The evolution of modern humans was a complex process,...
- Major Transitions in Human Evolution
Evolutionary problems are often considered in terms of...
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28 Ιουν 2019 · In order to promote a clarification of the use of the concept in literature, we propose here a classification in three different meanings of the notion of mosaic in human evolution: 1)...
With mosaic evolution, a major morphological and behavioural transition of a trait (for instance, bipedalism in hominins) can occur through several adaptive solutions in different species and even genera, each being a different combination of primitive and derived sub-traits.
Mosaic evolution, whereby transitional forms display a mixture of primitive and derived features, is nowadays recognized as a ubiquitous pattern of macroevolutionary change. Less known is that this expression was coined by Gavin de Beer in 1954.
In order to promote a clarification of the use of the concept in literature, we propose here a classification in three diferent meanings of the notion of mosaic in human evolution: 1) morphological (inter-specific and intra-specific) instability in a certain phase of a branched phylogeny; 2) multiple trajectories and versions of the same adaptiv...
1 Φεβ 2020 · The mosaic inference procedure starts by modelling all characters under a unified phylogenetic model, in which branch lengths represent morphological disparity. The algorithm then splits traits with divergent patterns in disparity into their own suites and then greedily merges these suite fragments until the AIC score ceases to improve.
These new fossils, dates, analyses, and interpretations lead to confirmation and refinement of the mosaic scheme of human evolution as proposed by early evolutionists such as Lamarck, Haeckel, and Darwin.
