Morphology, Paleontology, and Placental Mammal Phylogeny
نویسندگان
چکیده
منابع مشابه
Morphology and placental mammal phylogeny.
In a recent article on placental mammal phylogeny (Springer et al., 2007), we discussed evidence for correlated character evolution among morphological characters. We also performed pseudoextinction analyses that assessed whether placental orders remained in the expected superordinal group (Afrotheria, Xenarthra, Euarchontoglires, Laurasiatheria) when molecular and soft-tissue data were coded a...
متن کاملHeterogeneous Models Place the Root of the Placental Mammal Phylogeny
Heterogeneity among life traits in mammals has resulted in considerable phylogenetic conflict, particularly concerning the position of the placental root. Layered upon this are gene- and lineage-specific variation in amino acid substitution rates and compositional biases. Life trait variations that may impact upon mutational rates are longevity, metabolic rate, body size, and germ line generati...
متن کاملPhylogenomic datasets provide both precision and accuracy in estimating the timescale of placental mammal phylogeny.
The fossil record suggests a rapid radiation of placental mammals following the Cretaceous-Paleogene (K-Pg) mass extinction 65 million years ago (Ma); nevertheless, molecular time estimates, while highly variable, are generally much older. Early molecular studies suffer from inadequate dating methods, reliance on the molecular clock, and simplistic and over-confident interpretations of the foss...
متن کاملUsing genomic data to unravel the root of the placental mammal phylogeny.
The phylogeny of placental mammals is a critical framework for choosing future genome sequencing targets and for resolving the ancestral mammalian genome at the nucleotide level. Despite considerable recent progress defining superordinal relationships, several branches remain poorly resolved, including the root of the placental tree. Here we analyzed the genome sequence assemblies of human, arm...
متن کاملWhat is a placental mammal anyway?
Many developmental functions in marsupials and eutherian mammals are accomplished by different tissues, but similar genes.
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ژورنال
عنوان ژورنال: Systematic Biology
سال: 2008
ISSN: 1076-836X,1063-5157
DOI: 10.1080/10635150802033022