Evolution of mammals - Wikipedia
Most research concerning the evolution of mammals centers on the shapes of the teeth, the hardest parts of the tetrapod body. Other important research characteristics include the evolution of the middle ear bones, erect limb posture, a bony secondary palate, fur, hair, and warm-bloodedness. [citation needed]
Mammals - VertLife
We investigated global speciation-rate variation across crown Mammalia using a novel time-scaled phylogeny (N=5,911 species, ~70% with DNA), finding that trait- and latitude-associated speciation has caused uneven species richness among groups.
Inferring the mammal tree: Species-level sets of phylogenies for …
2019年12月4日 · This study presents a newly robust evolutionary timescale for ~6000 extant species of mammals, aimed at understanding their species-specific rates of diversification and distinct phylogenetic history. Ages and relationships in the tree of life are estimated with probabilistic confidence levels to help future tests of eco-evolutionary hypotheses.
In order to understand the origin of mammals, we have to look farther back, as I said, ~360 MYA to the relationships among tetrapod vertebrates. We can mark evolutionary changes along this phylogeny; the evolution of limbs, the evolution of the amnion, etc.
A species-level timeline of mammal evolution integrating ... - Nature
2021年12月22日 · Here we develop a Bayesian molecular-clock dating approach to estimate a timetree of 4,705 mammal species integrating information from 72 mammal genomes. We show that increasingly larger...
The Mammal Family Tree | Science - AAAS
2011年10月28日 · Most mammals that have ever lived are long extinct, their remains too old to yield DNA, and comparative morphology will be needed to place them on a backbone molecular phylogeny. The true shape of the mammal tree of life cannot be appreciated until many fossil lineages are placed on the tree.
Phylogenetic Trees and the Future of Mammalian Biodiversity
Phylogenies describe the origins and history of species. However, they can also help to predict species’ fates and so can be useful tools for managing the future of biodiversity. This chapter starts by sketching how phylogenetic, geographic, and trait information can be combined to elucidate present mammalian diversity patterns and how they arose.
Mammalia - Tree of Life Web Project
Phylogenies, taxonomic histories, age-ranges, and body mass estimates for genera and species of Cretaceous and Cenozoic North American fossil mammals. Compiled by John Alroy. World Heritage Australian Fossil Mammal Sites (Riversleigh/Naracoorte) .
Whole-genome phylogeny of mammals: Evolutionary information in ... - PNAS
2009年10月6日 · We partitioned the complete genomes of mammals (such as human, chimp, horse, and mouse) into their constituent nongenic, intronic, and exonic components. Phylogenic species trees were constructed for each individual component class of genome sequence data as well as the whole genomes by using standard tree-building algorithms with FFP distances.
The shape of mammalian phylogeny: patterns, processes and scales
2011年9月9日 · In mammals, for instance, a recent taxonomy listed 2277 species of rodent and 1166 species of bat, but only one aardvark, two flying lemurs and three elephants —even though all these clades are tens of millions of years old.