The Primate Fossil Record
نویسندگان
چکیده
منابع مشابه
Dating primate divergences through an integrated analysis of palaeontological and molecular data.
Estimation of divergence times is usually done using either the fossil record or sequence data from modern species. We provide an integrated analysis of palaeontological and molecular data to give estimates of primate divergence times that utilize both sources of information. The number of preserved primate species discovered in the fossil record, along with their geological age distribution, i...
متن کاملEstimating primate divergence times by using conditioned birth-and-death processes.
The fossil record provides a lower bound on the primate divergence time of 54.8 million years ago, but does not provide an explicit estimate for the divergence time itself. We show how the pattern of diversification through the Cenozoic can be combined with a model for speciation to give a distribution for the age of the primates. The primate fossil record, the number of extant primate species,...
متن کاملYearbook of Physical Anthropology
Our understanding of primate evolution is ultimately based on patterns of phyletic relationship and morphological change documented in the fossil record. Stratophenetic interpretation of living and fossil primates yields an objective alternative to the arbitrary scala naturae assumed implicitly in traditional comparative biology. Fossils provide an outline of primate history constraining compar...
متن کاملWhen Did Directional Asymmetry Enter the Record?
This chapter reviews evidence for the evolution of primate asymmetries in brain morphology and in behaviour, including the fossil and archaeological record of human evolution. This evidence suggests that, while morphological asymmetries are conserved features of the human brain, human functional asymmetries are derived, at least in their degree and consistency. A partial explanation is offered ...
متن کاملPrimate phylogenetic relationships and divergence dates inferred from complete mitochondrial genomes.
The origins and the divergence times of the most basal lineages within primates have been difficult to resolve mainly due to the incomplete sampling of early fossil taxa. The main source of contention is related to the discordance between molecular and fossil estimates: while there are no crown primate fossils older than 56Ma, most molecule-based estimates extend the origins of crown primates i...
متن کامل